CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>Horseshoe Curve (Pennsylvania) - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"5a72b04e-b4d9-4ee3-93dc-99ad1a46397c","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Horseshoe_Curve_(Pennsylvania)","wgTitle":"Horseshoe Curve (Pennsylvania)","wgCurRevisionId":1245683531,"wgRevisionId":1245683531,"wgArticleId":647287,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Pages using gadget WikiMiniAtlas","CS1 maint: numeric names: authors list","Articles with short description","Short description is different from Wikidata","Use mdy dates from June 2023","Use American English from June 2023","All Wikipedia articles written in American English","Featured articles","Coordinates on Wikidata","Articles containing potentially dated statements from 2008","All articles containing potentially dated statements", "Commons category link is on Wikidata","1854 establishments in Pennsylvania","Altoona, Pennsylvania","Historic Civil Engineering Landmarks","Museums in Blair County, Pennsylvania","National Historic Landmarks in Pennsylvania","National Register of Historic Places in Blair County, Pennsylvania","Norfolk Southern Railway","Pennsylvania Railroad","Rail infrastructure in Pennsylvania","Rail infrastructure on the National Register of Historic Places in Pennsylvania","Railroad museums in Pennsylvania","Railroad-related National Historic Landmarks","Railway lines opened in 1854","Tourist attractions in Blair County, Pennsylvania","Transportation buildings and structures in Blair County, Pennsylvania"],"wgPageViewLanguage":"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"Horseshoe_Curve_(Pennsylvania)","wgRelevantArticleId":647287,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[], "wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":30000,"wgCoordinates":{"lat":40.497638888888886,"lon":-78.48416666666667},"wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q42730","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true, "wgGETopicsMatchModeEnabled":false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["ext.cite.ux-enhancements","mediawiki.page.media","ext.scribunto.logs","site","mediawiki.page.ready","jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher","ext.gadget.WikiMiniAtlas","ext.urlShortener.toolbar", "ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","wikibase.sidebar.tracking"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.4"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/thumb/2/22/Horseshoe_Curve_aerial_photo%2C_March_2006.jpg/1200px-Horseshoe_Curve_aerial_photo%2C_March_2006.jpg"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="819"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/thumb/2/22/Horseshoe_Curve_aerial_photo%2C_March_2006.jpg/800px-Horseshoe_Curve_aerial_photo%2C_March_2006.jpg"> <meta property="og:image:width" content="800"> <meta property="og:image:height" content="546"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/thumb/2/22/Horseshoe_Curve_aerial_photo%2C_March_2006.jpg/640px-Horseshoe_Curve_aerial_photo%2C_March_2006.jpg"> <meta property="og:image:width" content="640"> <meta property="og:image:height" content="437"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Horseshoe Curve (Pennsylvania) - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/Horseshoe_Curve_(Pennsylvania)"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/Horseshoe_Curve_(Pennsylvania)"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Horseshoe_Curve_Pennsylvania rootpage-Horseshoe_Curve_Pennsylvania skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=Horseshoe+Curve+%28Pennsylvania%29" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=Horseshoe+Curve+%28Pennsylvania%29" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=Horseshoe+Curve+%28Pennsylvania%29" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=Horseshoe+Curve+%28Pennsylvania%29" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Location_and_design" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Location_and_design"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Location and design</span> </div> </a> <ul id="toc-Location_and_design-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-History" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#History"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>History</span> </div> </a> <button aria-controls="toc-History-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle History subsection</span> </button> <ul id="toc-History-sublist" class="vector-toc-list"> <li id="toc-Origin" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Origin"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Origin</span> </div> </a> <ul id="toc-Origin-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Construction" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Construction"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Construction</span> </div> </a> <ul id="toc-Construction-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-World_War_II_and_post-war" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#World_War_II_and_post-war"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.3</span> <span>World War II and post-war</span> </div> </a> <ul id="toc-World_War_II_and_post-war-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Current_operations" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Current_operations"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Current operations</span> </div> </a> <ul id="toc-Current_operations-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Trackside_attractions" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Trackside_attractions"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Trackside attractions</span> </div> </a> <ul id="toc-Trackside_attractions-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Notes"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Notes</span> </div> </a> <ul id="toc-Notes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Horseshoe Curve (Pennsylvania)</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 7 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-7" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">7 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%85%D9%86%D8%AD%D9%86%D9%89_%D9%87%D9%88%D8%B1%D8%B3%D8%B4%D9%88_(%D8%A8%D9%86%D8%B3%D9%8A%D9%84%D9%81%D8%A7%D9%86%D9%8A%D8%A7)" title="منحنى هورسشو (بنسيلفانيا) – Arabic" lang="ar" hreflang="ar" data-title="منحنى هورسشو (بنسيلفانيا)" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Horseshoe_Curve" title="Horseshoe Curve – German" lang="de" hreflang="de" data-title="Horseshoe Curve" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Horseshoe_Curve" title="Horseshoe Curve – French" lang="fr" hreflang="fr" data-title="Horseshoe Curve" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%9B%E3%83%BC%E3%82%B9%E3%82%B7%E3%83%A5%E3%83%BC%E3%82%AB%E3%83%BC%E3%83%96_(%E3%83%9A%E3%83%B3%E3%82%B7%E3%83%AB%E3%83%99%E3%83%8B%E3%82%A2%E5%B7%9E)" title="ホースシューカーブ (ペンシルベニア州) – Japanese" lang="ja" hreflang="ja" data-title="ホースシューカーブ (ペンシルベニア州)" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%97%E0%B8%B2%E0%B8%87%E0%B8%A3%E0%B8%96%E0%B9%84%E0%B8%9F%E0%B9%80%E0%B8%81%E0%B8%B7%E0%B8%AD%E0%B8%81%E0%B8%A1%E0%B9%89%E0%B8%B2_(%E0%B8%A3%E0%B8%B1%E0%B8%90%E0%B9%80%E0%B8%9E%E0%B8%99%E0%B8%8B%E0%B8%B4%E0%B8%A5%E0%B9%80%E0%B8%A7%E0%B9%80%E0%B8%99%E0%B8%B5%E0%B8%A2)" title="ทางรถไฟเกือกม้า (รัฐเพนซิลเวเนีย) – Thai" lang="th" hreflang="th" data-title="ทางรถไฟเกือกม้า (รัฐเพนซิลเวเนีย)" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D1%96%D0%B4%D0%BA%D0%BE%D0%B2%D0%BE%D0%BF%D0%BE%D0%B4%D1%96%D0%B1%D0%BD%D0%B8%D0%B9_%D0%BF%D0%BE%D0%B2%D0%BE%D1%80%D0%BE%D1%82_(%D0%9F%D0%B5%D0%BD%D1%81%D1%96%D0%BB%D1%8C%D0%B2%D0%B0%D0%BD%D1%96%D1%8F)" title="Підковоподібний поворот (Пенсільванія) – Ukrainian" lang="uk" hreflang="uk" data-title="Підковоподібний поворот (Пенсільванія)" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%B9%84%E9%93%81%E6%9B%B2%E7%BA%BF_(%E5%AE%BE%E5%A4%95%E6%B3%95%E5%B0%BC%E4%BA%9A%E5%B7%9E)" title="蹄铁曲线 (宾夕法尼亚州) – Chinese" lang="zh" hreflang="zh" data-title="蹄铁曲线 (宾夕法尼亚州)" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q42730#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Horseshoe_Curve_(Pennsylvania)" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:Horseshoe_Curve_(Pennsylvania)" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Horseshoe_Curve_(Pennsylvania)"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Horseshoe_Curve_(Pennsylvania)"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/Horseshoe_Curve_(Pennsylvania)" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/Horseshoe_Curve_(Pennsylvania)" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&oldid=1245683531" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=Horseshoe_Curve_%28Pennsylvania%29&id=1245683531&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FHorseshoe_Curve_%28Pennsylvania%29"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FHorseshoe_Curve_%28Pennsylvania%29"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=Horseshoe_Curve_%28Pennsylvania%29&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Horseshoe_Curve" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q42730" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> <div id="mw-indicator-coordinates" class="mw-indicator"><div class="mw-parser-output"><span id="coordinates"><a href="/wiki/Geographic_coordinate_system" title="Geographic coordinate system">Coordinates</a>: <style data-mw-deduplicate="TemplateStyles:r1156832818">.mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}</style><span class="plainlinks nourlexpansion"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Horseshoe_Curve_(Pennsylvania)&params=40_29_51.5_N_78_29_3_W_region:US_type:landmark"><span class="geo-default"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">40°29′51.5″N</span> <span class="longitude">78°29′3″W</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-nondefault"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">40.497639°N 78.48417°W</span><span style="display:none"> / <span class="geo">40.497639; -78.48417</span></span></span></a></span></span></div></div> <div id="mw-indicator-featured-star" class="mw-indicator"><div class="mw-parser-output"><span typeof="mw:File"><a href="/wiki/Wikipedia:Featured_articles*" title="This is a featured article. Click here for more information."><img alt="Featured article" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/20px-Cscr-featured.svg.png" decoding="async" width="20" height="19" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/30px-Cscr-featured.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/40px-Cscr-featured.svg.png 2x" data-file-width="466" data-file-height="443" /></a></span></div></div> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Rail curve in Altoona, Pennsylvania</div> <p class="mw-empty-elt"> </p> <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">United States historic place</div><style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox" style="border-spacing:1px;"><tbody><tr><td colspan="2" class="infobox-subheader" style="padding:0; border:none;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></td></tr><tr><td colspan="2" class="infobox-full-data"><div class="skin-nightmode-reset-color" style="width:100%; font-size:110%; font-weight:bold;color: #202122; background: #A8EDEF; line-height:1.5">Horseshoe Curve</div></td></tr><tr><td colspan="2" class="infobox-full-data"><div style="width:100%; text-align:center; line-height:1.5;color: #202122; background: #A8EDEF;"><a href="/wiki/National_Register_of_Historic_Places" title="National Register of Historic Places">U.S. National Register of Historic Places</a></div></td></tr><tr><td colspan="2" class="infobox-full-data"><div style="width:100%; text-align:center; line-height:1.4; color: #202122; background: #87CEEB"><a href="/wiki/National_Historic_Landmark" title="National Historic Landmark">U.S. National Historic Landmark</a></div></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:Horseshoe_Curve_aerial_photo,_March_2006.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/22/Horseshoe_Curve_aerial_photo%2C_March_2006.jpg/300px-Horseshoe_Curve_aerial_photo%2C_March_2006.jpg" decoding="async" width="300" height="205" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/22/Horseshoe_Curve_aerial_photo%2C_March_2006.jpg/450px-Horseshoe_Curve_aerial_photo%2C_March_2006.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/22/Horseshoe_Curve_aerial_photo%2C_March_2006.jpg/600px-Horseshoe_Curve_aerial_photo%2C_March_2006.jpg 2x" data-file-width="3424" data-file-height="2336" /></a></span><div class="infobox-caption">A March 2006 aerial photo of Horseshoe Curve</div></td></tr><tr><td colspan="2" class="infobox-image"><div class="switcher-container"><style data-mw-deduplicate="TemplateStyles:r1238443738">.mw-parser-output .locmap .od{position:absolute}.mw-parser-output .locmap .id{position:absolute;line-height:0}.mw-parser-output .locmap .l0{font-size:0;position:absolute}.mw-parser-output .locmap .pv{line-height:110%;position:absolute;text-align:center}.mw-parser-output .locmap .pl{line-height:110%;position:absolute;top:-0.75em;text-align:right}.mw-parser-output .locmap .pr{line-height:110%;position:absolute;top:-0.75em;text-align:left}.mw-parser-output .locmap .pv>div{display:inline;padding:1px}.mw-parser-output .locmap .pl>div{display:inline;padding:1px;float:right}.mw-parser-output .locmap .pr>div{display:inline;padding:1px;float:left}@media screen{html.skin-theme-clientpref-night .mw-parser-output .od,html.skin-theme-clientpref-night .mw-parser-output .od .pv>div,html.skin-theme-clientpref-night .mw-parser-output .od .pl>div,html.skin-theme-clientpref-night .mw-parser-output .od .pr>div{background:#fff!important;color:#000!important}html.skin-theme-clientpref-night .mw-parser-output .locmap{filter:grayscale(0.6)}html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data .locmap div{background:transparent!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .locmap{filter:grayscale(0.6)}html.skin-theme-clientpref-os .mw-parser-output .od,html.skin-theme-clientpref-os .mw-parser-output .od .pv>div,html.skin-theme-clientpref-os .mw-parser-output .od .pl>div,html.skin-theme-clientpref-os .mw-parser-output .od .pr>div{background:white!important;color:#000!important}html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data .locmap div{background:transparent!important}}</style><div class="center"><div class="locmap" style="width:300px;float:none;clear:both;margin-left:auto;margin-right:auto"><div style="width:300px;padding:0"><div style="position:relative;width:300px"><span class="notpageimage" typeof="mw:File"><a href="/wiki/File:Usa_edcp_location_map.svg" class="mw-file-description" title="Horseshoe Curve (Pennsylvania) is located in the United States"><img alt="Horseshoe Curve (Pennsylvania) is located in the United States" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/20/Usa_edcp_location_map.svg/300px-Usa_edcp_location_map.svg.png" decoding="async" width="300" height="186" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/20/Usa_edcp_location_map.svg/450px-Usa_edcp_location_map.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/20/Usa_edcp_location_map.svg/600px-Usa_edcp_location_map.svg.png 2x" data-file-width="1181" data-file-height="731" /></a></span><div class="od notheme" style="top:38.745%;left:78.614%;font-size:91%"><div class="id" style="left:-4px;top:-4px"><span class="notpageimage" typeof="mw:File"><span title="Horseshoe Curve (Pennsylvania)"><img alt="Horseshoe Curve (Pennsylvania)" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/7px-Red_pog.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/11px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/14px-Red_pog.svg.png 2x" data-file-width="64" data-file-height="64" /></span></span></div></div></div><div style="padding-top:0.2em"></div><span class="switcher-label" style="display:none">Show map of the United States</span></div></div></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238443738"><div class="center"><div class="locmap" style="width:300px;float:none;clear:both;margin-left:auto;margin-right:auto"><div style="width:300px;padding:0"><div style="position:relative;width:300px"><span class="notpageimage" typeof="mw:File"><a href="/wiki/File:USA_Pennsylvania_location_map.svg" class="mw-file-description" title="Horseshoe Curve (Pennsylvania) is located in Pennsylvania"><img alt="Horseshoe Curve (Pennsylvania) is located in Pennsylvania" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/USA_Pennsylvania_location_map.svg/300px-USA_Pennsylvania_location_map.svg.png" decoding="async" width="300" height="201" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/USA_Pennsylvania_location_map.svg/450px-USA_Pennsylvania_location_map.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9d/USA_Pennsylvania_location_map.svg/600px-USA_Pennsylvania_location_map.svg.png 2x" data-file-width="1201" data-file-height="805" /></a></span><div class="od notheme" style="top:68.824%;left:35.739%;font-size:91%"><div class="id" style="left:-4px;top:-4px"><span class="notpageimage" typeof="mw:File"><span title="Horseshoe Curve (Pennsylvania)"><img alt="Horseshoe Curve (Pennsylvania)" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/7px-Red_pog.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/11px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/14px-Red_pog.svg.png 2x" data-file-width="64" data-file-height="64" /></span></span></div></div></div><div style="padding-top:0.2em"></div><span class="switcher-label" style="display:none">Show map of Pennsylvania</span></div></div></div></div></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:bold; border: 0;">Location</th><td class="infobox-data" style="border: 0;"><a href="/wiki/Logan_Township,_Blair_County,_Pennsylvania" title="Logan Township, Blair County, Pennsylvania">Logan Township</a>, <a href="/wiki/Blair_County,_Pennsylvania" title="Blair County, Pennsylvania">Blair County</a>, <a href="/wiki/Pennsylvania" title="Pennsylvania">Pennsylvania</a></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:bold; border: 0;">Nearest city</th><td class="infobox-data" style="border: 0;"><a href="/wiki/Altoona,_Pennsylvania" title="Altoona, Pennsylvania">Altoona, Pennsylvania</a>, U.S.</td></tr><tr><th scope="row" class="infobox-label" style="font-weight:bold; border: 0;">Coordinates</th><td class="infobox-data" style="border: 0;"><span class="geo-inline"><style data-mw-deduplicate="TemplateStyles:r1156832818">.mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}</style><span class="plainlinks nourlexpansion"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Horseshoe_Curve_(Pennsylvania)&params=40_29_51.5_N_78_29_3_W_region:US_type:landmark"><span class="geo-default"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">40°29′51.5″N</span> <span class="longitude">78°29′3″W</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-nondefault"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">40.497639°N 78.48417°W</span><span style="display:none"> / <span class="geo">40.497639; -78.48417</span></span></span></a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:bold; border: 0;">Built</th><td class="infobox-data" style="border: 0;">1851–1854</td></tr><tr><th scope="row" class="infobox-label" style="font-weight:bold; border: 0;">Built by</th><td class="infobox-data" style="border: 0;"><a href="/wiki/Pennsylvania_Railroad" title="Pennsylvania Railroad">Pennsylvania Railroad</a></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:bold; border: 0;">Architect</th><td class="infobox-data" style="border: 0;"><a href="/wiki/John_Edgar_Thomson" title="John Edgar Thomson">John Edgar Thomson</a></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:bold; border: 0;">NRHP reference <abbr title="number">No.</abbr></th><td class="infobox-data" style="border: 0;"><a rel="nofollow" class="external text" href="https://npgallery.nps.gov/AssetDetail/NRIS/66000647">66000647</a><sup id="cite_ref-focus_1-0" class="reference"><a href="#cite_note-focus-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background: #A8EDEF">Significant dates</th></tr><tr><th scope="row" class="infobox-label" style="font-weight:bold; border: 0;">Added to NRHP</th><td class="infobox-data" style="border: 0;">November 13, 1966</td></tr><tr><th scope="row" class="infobox-label" style="font-weight:bold; border: 0;">Designated NHL</th><td class="infobox-data" style="border: 0;">November 13, 1966</td></tr></tbody></table> <p>The <b>Horseshoe Curve</b> is a three-track <a href="/wiki/Railroad" class="mw-redirect" title="Railroad">railroad</a> <a href="/wiki/Horseshoe_curve" title="Horseshoe curve">curve</a> on <a href="/wiki/Norfolk_Southern_Railway" title="Norfolk Southern Railway">Norfolk Southern Railway</a>'s <a href="/wiki/Pittsburgh_Line" title="Pittsburgh Line">Pittsburgh Line</a> in <a href="/wiki/Blair_County,_Pennsylvania" title="Blair County, Pennsylvania">Blair County</a>, <a href="/wiki/Pennsylvania" title="Pennsylvania">Pennsylvania</a>. The curve is roughly 2,375 feet (700 m) long and 1,300 feet (400 m) in diameter. Completed in 1854 by the <a href="/wiki/Pennsylvania_Railroad" title="Pennsylvania Railroad">Pennsylvania Railroad</a> as a way to reduce the westbound grade to the summit of the <a href="/wiki/Allegheny_Mountains" title="Allegheny Mountains">Allegheny Mountains</a>, it replaced the time-consuming <a href="/wiki/Allegheny_Portage_Railroad" title="Allegheny Portage Railroad">Allegheny Portage Railroad</a>, which was the only other route across the mountains for large vehicles. The curve was later owned and used by three Pennsylvania Railroad successors: <a href="/wiki/Penn_Central_Transportation_Company" title="Penn Central Transportation Company">Penn Central</a>, <a href="/wiki/Conrail" title="Conrail">Conrail</a>, and <a href="/wiki/Norfolk_Southern_Railway" title="Norfolk Southern Railway">Norfolk Southern</a>. </p><p>Horseshoe Curve has long been a tourist attraction. A trackside observation park was completed in 1879. The park was renovated and a <a href="/wiki/Visitor_center" title="Visitor center">visitor center</a> built in the early 1990s. The <a href="/wiki/Railroaders_Memorial_Museum" title="Railroaders Memorial Museum">Railroaders Memorial Museum</a> in <a href="/wiki/Altoona,_Pennsylvania" title="Altoona, Pennsylvania">Altoona</a> manages the center, which has exhibits pertaining to the curve. The Horseshoe Curve was added to the <a href="/wiki/National_Register_of_Historic_Places" title="National Register of Historic Places">National Register of Historic Places</a> and designated as a <a href="/wiki/National_Historic_Landmark" title="National Historic Landmark">National Historic Landmark</a> in 1966. It became a <a href="/wiki/National_Historic_Civil_Engineering_Landmark" class="mw-redirect" title="National Historic Civil Engineering Landmark">National Historic Civil Engineering Landmark</a> in 2004. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Location_and_design">Location and design</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit&section=1" title="Edit section: Location and design"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Horseshoe_Curve_map.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/98/Horseshoe_Curve_map.jpg/220px-Horseshoe_Curve_map.jpg" decoding="async" width="220" height="128" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/98/Horseshoe_Curve_map.jpg/330px-Horseshoe_Curve_map.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/98/Horseshoe_Curve_map.jpg/440px-Horseshoe_Curve_map.jpg 2x" data-file-width="802" data-file-height="468" /></a><figcaption>A topographic map of the area around the Horseshoe Curve</figcaption></figure> <p>Horseshoe Curve is 5 miles (8 km) west of <a href="/wiki/Altoona,_Pennsylvania" title="Altoona, Pennsylvania">Altoona, Pennsylvania</a>, in <a href="/wiki/Logan_Township,_Blair_County,_Pennsylvania" title="Logan Township, Blair County, Pennsylvania">Logan Township</a>, <a href="/wiki/Blair_County,_Pennsylvania" title="Blair County, Pennsylvania">Blair County</a>. It sits at railroad milepost 242 on the <a href="/wiki/Pittsburgh_Line" title="Pittsburgh Line">Pittsburgh Line</a>, which is the <a href="/wiki/Norfolk_Southern_Railway" title="Norfolk Southern Railway">Norfolk Southern Railway</a> Pittsburgh Division main line between <a href="/wiki/Pittsburgh" title="Pittsburgh">Pittsburgh</a> and <a href="/wiki/Harrisburg,_Pennsylvania" title="Harrisburg, Pennsylvania">Harrisburg</a>, Pennsylvania. Horseshoe Curve bends around a dam and lake, the highest of three Altoona Water Authority reservoirs that supply water from the valley to the city.<sup id="cite_ref-FOOTNOTESeidel200818_2-0" class="reference"><a href="#cite_note-FOOTNOTESeidel200818-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> It spans two ravines formed by creeks: <a href="/wiki/Kittanning_Run" title="Kittanning Run">Kittanning Run</a>, on the north side of the valley, and Glenwhite Run, on the south.<sup id="cite_ref-usgs_3-0" class="reference"><a href="#cite_note-usgs-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> The Blair County Veterans Memorial Highway (SR 4008) follows the valley west from Altoona and tunnels under the curve.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>Westbound trains climb a maximum grade of 1.85 percent for 12 miles (19 km) from Altoona to <a href="/wiki/Gallitzin,_Pennsylvania" title="Gallitzin, Pennsylvania">Gallitzin</a>.<sup id="cite_ref-FOOTNOTEBorkowski2008112_6-0" class="reference"><a href="#cite_note-FOOTNOTEBorkowski2008112-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Just west of the <a href="/wiki/Gallitzin_Tunnel" title="Gallitzin Tunnel">Gallitzin Tunnels</a>, trains pass the summit of the <a href="/wiki/Allegheny_Mountains" title="Allegheny Mountains">Allegheny Mountains</a>, then descend for 25 miles (40 km) to <a href="/wiki/Johnstown,_Pennsylvania" title="Johnstown, Pennsylvania">Johnstown</a> on a grade of 1.1 percent or less.<sup id="cite_ref-FOOTNOTEBorkowski2008112_6-1" class="reference"><a href="#cite_note-FOOTNOTEBorkowski2008112-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> The overall grade of the curve was listed by the Pennsylvania Railroad as 1.45 percent; it is listed as 1.34 percent by Norfolk Southern.<sup id="cite_ref-usgs_3-1" class="reference"><a href="#cite_note-usgs-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-track_chart_7-0" class="reference"><a href="#cite_note-track_chart-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> The curve is 2,375 feet (724 m) long and about 1,300 feet (400 m) across at its widest.<sup id="cite_ref-FOOTNOTEGreenwood1975sec._7,_p._1_8-0" class="reference"><a href="#cite_note-FOOTNOTEGreenwood1975sec._7,_p._1-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTEGreenwood1975sec._8,_p._2_9-0" class="reference"><a href="#cite_note-FOOTNOTEGreenwood1975sec._8,_p._2-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> For every 100 feet (30 m), the tracks at the Horseshoe Curve bend 9 degrees 15 <a href="/wiki/Minute_of_arc" class="mw-redirect" title="Minute of arc">arc minutes</a>, with the entire curve totaling 220 degrees.<sup id="cite_ref-howe_10-0" class="reference"><a href="#cite_note-howe-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTEGreenwood1975sec._7,_p._1_8-1" class="reference"><a href="#cite_note-FOOTNOTEGreenwood1975sec._7,_p._1-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>The rise of a westbound train through the curve can be described in several ways. One measurement is from the point where the rails north of the curve start to bow out to a point on the line directly south, across the original Kittanning Reservoir: across this north–south distance of 1,119 feet (340 m), a train rises from 1,601 feet (490 m) above sea level to 1,660 feet (510 m). Another measurement is from the point where the rails coming west out of Altoona make their first detour north to the curve, to a point across Lake Altoona where the rails begin their one-mile straight run south before turning west to the Gallitzin Tunnels; this measurement encompasses the entire Curve structure, including both reservoirs built in its bounds to protect the curve from flooding. Across this north-south distance of 1,006 feet (310 m), a westbound train rises from 1,473 feet (450 m) to 1,706 feet (520 m).<sup id="cite_ref-elevation_11-0" class="reference"><a href="#cite_note-elevation-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> This latter rise—133 vertical feet in 1,006 linear feet—is a 13.2% grade, completely unascendable by conventional railroads, which usually stick to grades of 2.2% or less.<sup id="cite_ref-RRgrades_12-0" class="reference"><a href="#cite_note-RRgrades-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p><p>Each track consists of 136 pounds per yard (67.5 kg/m), <a href="/wiki/Continuous_welded_rail" class="mw-redirect" title="Continuous welded rail">welded</a> rail.<sup id="cite_ref-track_chart_7-1" class="reference"><a href="#cite_note-track_chart-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Before <a href="/wiki/Dieselization" class="mw-redirect" title="Dieselization">dieselization</a> and the introduction of <a href="/wiki/Dynamic_braking" title="Dynamic braking">dynamic braking</a> and rail oilers, the rails along the curve were transposed—left to right and vice versa—to equalize the wear on each rail from the <a href="/wiki/Flange" title="Flange">flanges</a> of passing steam locomotives and rail cars, thereby extending their life.<sup id="cite_ref-FOOTNOTEGreenwood1975sec._8,_p._3_13-0" class="reference"><a href="#cite_note-FOOTNOTEGreenwood1975sec._8,_p._3-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit&section=2" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Four_trains_abreast--enormous_traffic_on_the_Penn._R%27y,_west_of_Altoona,_Pa._Digital_ID-_(b%26w_film_copy_neg.)_cph_3b39962_http-_hdl.loc.gov_loc.pnp_cph.3b39962.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/Four_trains_abreast--enormous_traffic_on_the_Penn._R%27y%2C_west_of_Altoona%2C_Pa._Digital_ID-_%28b%26w_film_copy_neg.%29_cph_3b39962_http-_hdl.loc.gov_loc.pnp_cph.3b39962.jpg/220px-thumbnail.jpg" decoding="async" width="220" height="239" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/Four_trains_abreast--enormous_traffic_on_the_Penn._R%27y%2C_west_of_Altoona%2C_Pa._Digital_ID-_%28b%26w_film_copy_neg.%29_cph_3b39962_http-_hdl.loc.gov_loc.pnp_cph.3b39962.jpg/330px-thumbnail.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/76/Four_trains_abreast--enormous_traffic_on_the_Penn._R%27y%2C_west_of_Altoona%2C_Pa._Digital_ID-_%28b%26w_film_copy_neg.%29_cph_3b39962_http-_hdl.loc.gov_loc.pnp_cph.3b39962.jpg/440px-thumbnail.jpg 2x" data-file-width="1275" data-file-height="1388" /></a><figcaption>Four trains on four tracks passing each other on <a href="/wiki/Pennsylvania_Railroad" title="Pennsylvania Railroad">Pennsylvania Railroad</a>'s mainline near Horseshoe Curve, <abbr title="circa">c.</abbr><span style="white-space:nowrap;"> 1907</span></figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Origin">Origin</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit&section=3" title="Edit section: Origin"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 1834, the Commonwealth of Pennsylvania built the <a href="/wiki/Allegheny_Portage_Railroad" title="Allegheny Portage Railroad">Allegheny Portage Railroad</a> across the Allegheny Mountains to connect <a href="/wiki/Philadelphia" title="Philadelphia">Philadelphia</a> and <a href="/wiki/Pittsburgh" title="Pittsburgh">Pittsburgh</a>,<sup id="cite_ref-howe_10-1" class="reference"><a href="#cite_note-howe-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> as part of the <a href="/wiki/Main_Line_of_Public_Works" title="Main Line of Public Works">Main Line of Public Works</a>. The Portage Railroad was a series of canals and <a href="/wiki/Funicular" title="Funicular">inclined planes</a> and remained in use until the mid-19th century. The <a href="/wiki/Pennsylvania_Railroad" title="Pennsylvania Railroad">Pennsylvania Railroad</a> was incorporated in 1847 to build a railroad from Harrisburg to Pittsburgh, replacing the cumbersome Portage Railroad.<sup id="cite_ref-howe_10-2" class="reference"><a href="#cite_note-howe-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p>Using surveys completed in 1842,<sup id="cite_ref-FOOTNOTEBrown201543_14-0" class="reference"><a href="#cite_note-FOOTNOTEBrown201543-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> the state's engineers recommended an 84-mile (135 km) route west from <a href="/wiki/Lewistown,_Pennsylvania" title="Lewistown, Pennsylvania">Lewistown</a> that followed the ridges with a maximum <a href="/wiki/Grade_(slope)" title="Grade (slope)">grade</a> of 0.852 percent.<sup id="cite_ref-FOOTNOTEGreenwood1975sec._8,_p._1_15-0" class="reference"><a href="#cite_note-FOOTNOTEGreenwood1975sec._8,_p._1-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> But the Chief Engineer for the Pennsylvania Railroad, <a href="/wiki/John_Edgar_Thomson" title="John Edgar Thomson">John Edgar Thomson</a>, chose a route on lower, flatter terrain along the <a href="/wiki/Juniata_River" title="Juniata River">Juniata River</a> and accepted a steeper grade west of Altoona. The valley west of Altoona was split into two <a href="/wiki/Ravine" title="Ravine">ravines</a> by a mountain; surveys had already found a route with an acceptable grade east from Gallitzin to the south side of the valley, and the proposed Horseshoe Curve would allow the same grade to continue to Altoona. </p> <div class="mw-heading mw-heading3"><h3 id="Construction">Construction</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit&section=4" title="Edit section: Construction"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:The_Horseshoe_Curve,_Pennsylvania,_by_H.C._White_Co._crop.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/25/The_Horseshoe_Curve%2C_Pennsylvania%2C_by_H.C._White_Co._crop.jpg/220px-The_Horseshoe_Curve%2C_Pennsylvania%2C_by_H.C._White_Co._crop.jpg" decoding="async" width="220" height="219" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/2/25/The_Horseshoe_Curve%2C_Pennsylvania%2C_by_H.C._White_Co._crop.jpg 1.5x" data-file-width="312" data-file-height="310" /></a><figcaption>A <a href="/wiki/Stereoscopy" title="Stereoscopy">stereo card</a> of a train on the curve, <abbr title="circa">c.</abbr><span style="white-space:nowrap;"> 1907</span></figcaption></figure> <p>Work on Horseshoe Curve began in 1850.<sup id="cite_ref-FOOTNOTEGreenwood1975sec._8,_p._2_9-1" class="reference"><a href="#cite_note-FOOTNOTEGreenwood1975sec._8,_p._2-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> It was done without <a href="/wiki/Heavy_equipment_(construction)" class="mw-redirect" title="Heavy equipment (construction)">heavy equipment</a>, only men "with picks and shovels, horses and drags".<sup id="cite_ref-howe_10-3" class="reference"><a href="#cite_note-howe-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Engineers built an earth <a href="/wiki/Embankment_(transportation)" class="mw-redirect" title="Embankment (transportation)">fill</a> over the first ravine encountered while ascending, formed by Kittanning Run, <a href="/wiki/Cut_(earthmoving)" class="mw-redirect" title="Cut (earthmoving)">cut</a> the point of the mountain between the ravines, and filled in the second ravine, formed by Glenwhite Run.<sup id="cite_ref-FOOTNOTEGreenwood1975sec._8,_p._2_9-2" class="reference"><a href="#cite_note-FOOTNOTEGreenwood1975sec._8,_p._2-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> The 31.1-mile (50.1 km) line between Altoona and <a href="/wiki/Johnstown,_Pennsylvania" title="Johnstown, Pennsylvania">Johnstown</a>, including Horseshoe Curve, opened on February 15, 1854. The total cost was <a href="/wiki/United_States_dollar" title="United States dollar">$</a>2,495,000 or $80,225 per mile ($49,850 /km).<sup id="cite_ref-FOOTNOTEGreenwood1975sec._8,_p._3_13-1" class="reference"><a href="#cite_note-FOOTNOTEGreenwood1975sec._8,_p._3-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p><p>In 1879, the remaining part of the mountain inside the curve was leveled to allow the construction of a park and observation area—the first built for viewing trains.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> As demand for train travel increased, a third track was added to the curve in 1898 and a fourth was added two years later.<sup id="cite_ref-FOOTNOTEGreenwood1975sec._8,_p._3_13-2" class="reference"><a href="#cite_note-FOOTNOTEGreenwood1975sec._8,_p._3-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-woods_17-0" class="reference"><a href="#cite_note-woods-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p><p>From around the 1860s to just before <a href="/wiki/World_War_II" title="World War II">World War II</a>, passengers could ride to the PRR's Kittanning Point station near the curve.<sup id="cite_ref-cupper_18-0" class="reference"><a href="#cite_note-cupper-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTESeidel200818–19_19-0" class="reference"><a href="#cite_note-FOOTNOTESeidel200818–19-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> Two <a href="/wiki/Branch_line" title="Branch line">branch railroads</a> connected to the main line at Horseshoe Curve in the early 20th century; the Kittanning Run Railroad and the railroad owned by the Glen White Coal and Lumber Company followed their respective creeks to nearby coal mines.<sup id="cite_ref-coal_20-0" class="reference"><a href="#cite_note-coal-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> The Pennsylvania Railroad delivered empty <a href="/wiki/Hopper_car" title="Hopper car">hopper cars</a> to the Kittanning Point station which the two railroads returned loaded with coal.<sup id="cite_ref-coal_20-1" class="reference"><a href="#cite_note-coal-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> In the early 1900s, locomotives could take on fuel and water at a coal trestle on a spur track across from the station.<sup id="cite_ref-FOOTNOTESeidel200819,_25_21-0" class="reference"><a href="#cite_note-FOOTNOTESeidel200819,_25-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> </p><p>A reservoir was built at the apex of the Horseshoe Curve in 1887 for <a href="/wiki/Altoona,_Pennsylvania" title="Altoona, Pennsylvania">Altoona</a>; a second reservoir, below the first, was finished in 1896.<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> A third reservoir, Lake Altoona, was completed by 1913.<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> A <a href="/wiki/Macadam" title="Macadam">macadam</a> road to the curve was opened in 1932 allowing access for visitors, and a <a href="/wiki/Gift_shop" title="Gift shop">gift shop</a> was built in 1940.<sup id="cite_ref-cupper_18-1" class="reference"><a href="#cite_note-cupper-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> </p><p>Horseshoe Curve was depicted in brochures, calendars and other promotional material; Pennsylvania Railroad <a href="/wiki/Stock_certificate" title="Stock certificate">stock certificates</a> were printed with a <a href="/wiki/Vignette_(graphic_design)" title="Vignette (graphic design)">vignette</a> of it.<sup id="cite_ref-FOOTNOTESeidel200843_24-0" class="reference"><a href="#cite_note-FOOTNOTESeidel200843-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> The Pennsylvania pitted the scenery of Horseshoe Curve against rival <a href="/wiki/New_York_Central_Railroad" title="New York Central Railroad">New York Central Railroad</a>'s "Water Level Route" during the 1890s.<sup id="cite_ref-cupper_18-2" class="reference"><a href="#cite_note-cupper-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> A <a href="/wiki/Raised-relief_map" title="Raised-relief map">raised-relief</a>, <a href="/wiki/Scale_model" title="Scale model">scale model</a> of the curve was included as part of the Pennsylvania Railroad's exhibit at the 1893 <a href="/wiki/World%27s_Columbian_Exposition" title="World's Columbian Exposition">World's Columbian Exposition</a> in <a href="/wiki/Chicago" title="Chicago">Chicago</a>.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> Pennsylvania Railroad <a href="/wiki/Conductor_(transportation)" class="mw-redirect" title="Conductor (transportation)">conductors</a> were told to announce the Horseshoe Curve to daytime passengers—a tradition that continues aboard <a href="/wiki/Amtrak" title="Amtrak">Amtrak</a> trains.<sup id="cite_ref-woods_17-1" class="reference"><a href="#cite_note-woods-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p> <div class="thumb tnone" style="margin-left:auto;margin-right:auto;overflow:hidden;width:auto;max-width:1360px"><div class="thumbinner"><div class="noresize" style="overflow:auto"><span typeof="mw:File"><a href="/wiki/File:PRR_Horseshoe.jpg" class="mw-file-description" title="Panorama of the curve with Kittanning Point station in the distance in 1934"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/PRR_Horseshoe.jpg/1352px-PRR_Horseshoe.jpg" decoding="async" width="1352" height="225" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/PRR_Horseshoe.jpg/2028px-PRR_Horseshoe.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c1/PRR_Horseshoe.jpg/2704px-PRR_Horseshoe.jpg 2x" data-file-width="3941" data-file-height="656" /></a></span></div><div class="thumbcaption"><div class="magnify"><a href="/wiki/File:PRR_Horseshoe.jpg" title="File:PRR Horseshoe.jpg"> </a></div>Panorama of the curve with Kittanning Point station in the distance in 1934</div></div></div> <div class="mw-heading mw-heading3"><h3 id="World_War_II_and_post-war">World War II and post-war</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit&section=5" title="Edit section: World War II and post-war"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:A423,_Horseshoe_Curve,_Altoona,_Pennsylvania,_USA,_1954_centennial_image_in_railroad_museum.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/94/A423%2C_Horseshoe_Curve%2C_Altoona%2C_Pennsylvania%2C_USA%2C_1954_centennial_image_in_railroad_museum.jpg/220px-A423%2C_Horseshoe_Curve%2C_Altoona%2C_Pennsylvania%2C_USA%2C_1954_centennial_image_in_railroad_museum.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/94/A423%2C_Horseshoe_Curve%2C_Altoona%2C_Pennsylvania%2C_USA%2C_1954_centennial_image_in_railroad_museum.jpg/330px-A423%2C_Horseshoe_Curve%2C_Altoona%2C_Pennsylvania%2C_USA%2C_1954_centennial_image_in_railroad_museum.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/94/A423%2C_Horseshoe_Curve%2C_Altoona%2C_Pennsylvania%2C_USA%2C_1954_centennial_image_in_railroad_museum.jpg/440px-A423%2C_Horseshoe_Curve%2C_Altoona%2C_Pennsylvania%2C_USA%2C_1954_centennial_image_in_railroad_museum.jpg 2x" data-file-width="1024" data-file-height="768" /></a><figcaption>A 100th anniversary celebration of Horseshoe Curve in 1954</figcaption></figure> <p>During <a href="/wiki/World_War_II" title="World War II">World War II</a>, the <a href="/wiki/Pennsylvania_Railroad" title="Pennsylvania Railroad">PRR</a> carried troops and materiel for the <a href="/wiki/Allies_of_World_War_II" title="Allies of World War II">Allied</a> war effort, and the curve was under armed guard.<sup id="cite_ref-FOOTNOTESeidel2008113_26-0" class="reference"><a href="#cite_note-FOOTNOTESeidel2008113-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/Military_intelligence" title="Military intelligence">military intelligence</a> arm of <a href="/wiki/Nazi_Germany" title="Nazi Germany">Nazi Germany</a>, the <i><a href="/wiki/Abwehr" title="Abwehr">Abwehr</a></i>, plotted to sabotage important industrial assets in the United States in a project code-named <a href="/wiki/Operation_Pastorius" title="Operation Pastorius">Operation Pastorius</a>.<sup id="cite_ref-FOOTNOTECohen200247_27-0" class="reference"><a href="#cite_note-FOOTNOTECohen200247-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> In June 1942, four men were brought by submarine and landed on <a href="/wiki/Long_Island" title="Long Island">Long Island</a>, planning to destroy such sites as the curve, <a href="/wiki/Hell_Gate_Bridge" title="Hell Gate Bridge">Hell Gate Bridge</a>, <a href="/wiki/Alcoa" title="Alcoa">Alcoa</a> aluminum factories and locks on the <a href="/wiki/Ohio_River" title="Ohio River">Ohio River</a>.<sup id="cite_ref-FOOTNOTECohen200246–47_28-0" class="reference"><a href="#cite_note-FOOTNOTECohen200246–47-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> The would-be <a href="/wiki/Saboteur" class="mw-redirect" title="Saboteur">saboteurs</a> were quickly apprehended by the <a href="/wiki/Federal_Bureau_of_Investigation" title="Federal Bureau of Investigation">Federal Bureau of Investigation</a> after one, <a href="/wiki/George_John_Dasch" title="George John Dasch">George John Dasch</a>, turned himself in. All but Dasch and one other would-be saboteur were executed as spies and saboteurs.<sup id="cite_ref-FOOTNOTECohen200253_29-0" class="reference"><a href="#cite_note-FOOTNOTECohen200253-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> </p><p>Train count peaked in the 1940s with over 50 passenger trains per day, along with many freight and military trains.<sup id="cite_ref-FOOTNOTESeidel2008113_26-1" class="reference"><a href="#cite_note-FOOTNOTESeidel2008113-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> Demand for train travel dropped greatly after World War II, as highway and air travel became popular.<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> </p><p>During the 1954 celebration of the centennial of the opening of Horseshoe Curve, a <a href="/wiki/Night_photography" title="Night photography">night photo</a> was arranged by <a href="/wiki/Sylvania_Electric_Products" title="Sylvania Electric Products">Sylvania Electric Products</a> using 6,000 flashbulbs and 31 miles (50 km) of wiring to illuminate the area.<sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> The event also commemorated the 75th anniversary of the <a href="/wiki/Incandescent_light_bulb" title="Incandescent light bulb">incandescent light bulb</a>. Pennsylvania steam locomotive <a href="/wiki/PRR_1361" class="mw-redirect" title="PRR 1361">1361</a> was placed at the park inside the Horseshoe Curve on June 8, 1957.<sup id="cite_ref-FOOTNOTEStauferPennypacker1962161_32-0" class="reference"><a href="#cite_note-FOOTNOTEStauferPennypacker1962161-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> It is one of 425 <a href="/wiki/PRR_K4s" class="mw-redirect" title="PRR K4s">K4s</a>-class engines: the principal passenger locomotives on the Pennsylvania Railroad that regularly plied the curve.<sup id="cite_ref-FOOTNOTEStauferPennypacker1962159_33-0" class="reference"><a href="#cite_note-FOOTNOTEStauferPennypacker1962159-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> The Horseshoe Curve was listed on the <a href="/wiki/National_Register_of_Historic_Places" title="National Register of Historic Places">National Register of Historic Places</a> and was designated a <a href="/wiki/National_Historic_Landmark" title="National Historic Landmark">National Historic Landmark</a> on November 13, 1966.<sup id="cite_ref-focus_1-1" class="reference"><a href="#cite_note-focus-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-34" class="reference"><a href="#cite_note-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> The operation of the observation park was transferred to the city of Altoona the same year.<sup id="cite_ref-35" class="reference"><a href="#cite_note-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> The Pennsylvania Railroad was combined with the <a href="/wiki/New_York_Central_Railroad" title="New York Central Railroad">New York Central Railroad</a> in 1968. The merger created <a href="/wiki/Penn_Central_Transportation_Company" title="Penn Central Transportation Company">Penn Central</a>, which went bankrupt in 1970 and was taken over by the federal government in 1976, as part of the merger that created <a href="/wiki/Conrail" title="Conrail">Conrail</a>. The second track from the inside at the Horseshoe Curve<sup id="cite_ref-36" class="reference"><a href="#cite_note-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> was removed by Conrail in 1981.<sup id="cite_ref-37" class="reference"><a href="#cite_note-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> The K4s 1361 was removed from the curve for a restoration to working order in September 1985 and was replaced with the ex-Conrail <a href="/wiki/EMD_GP9" title="EMD GP9">EMD GP9</a> diesel-electric locomotive <a href="/wiki/PRR_7048" class="mw-redirect" title="PRR 7048">7048</a> that was repainted into a Pennsylvania Railroad scheme.<sup id="cite_ref-cupper_18-3" class="reference"><a href="#cite_note-cupper-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> </p><p>Starting in June 1990, the park at the Horseshoe Curve underwent a $5.8 million renovation funded by the <a href="/wiki/Pennsylvania_Department_of_Transportation" title="Pennsylvania Department of Transportation">Pennsylvania Department of Transportation</a> and by the <a href="/wiki/National_Park_Service" title="National Park Service">National Park Service</a> through its "America's Industrial Heritage Project".<sup id="cite_ref-ob-rep_38-0" class="reference"><a href="#cite_note-ob-rep-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> The renovations were completed in April 1992 with the dedication of a new visitor center.<sup id="cite_ref-ob-rep_38-1" class="reference"><a href="#cite_note-ob-rep-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> In 1999, Conrail was divided between <a href="/wiki/CSX_Transportation" title="CSX Transportation">CSX Transportation</a> and Norfolk Southern, with the Horseshoe Curve being acquired by the latter. The Horseshoe Curve was lit up again with fireworks and rail-borne searchlights during its <a href="https://en.wiktionary.org/wiki/sesquicentennial" class="extiw" title="wikt:sesquicentennial">sesquicentennial</a> in 2004 in homage to the 1954 celebrations.<sup id="cite_ref-150th_39-0" class="reference"><a href="#cite_note-150th-39"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-40" class="reference"><a href="#cite_note-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> It was designated a <a href="/wiki/National_Historic_Civil_Engineering_Landmark" class="mw-redirect" title="National Historic Civil Engineering Landmark">National Historic Civil Engineering Landmark</a> by the <a href="/wiki/American_Society_of_Civil_Engineers" title="American Society of Civil Engineers">American Society of Civil Engineers</a> in 2004.<sup id="cite_ref-41" class="reference"><a href="#cite_note-41"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Current_operations">Current operations</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit&section=6" title="Edit section: Current operations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Horseshoe_Curve_Penna2.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/20/Horseshoe_Curve_Penna2.jpg/220px-Horseshoe_Curve_Penna2.jpg" decoding="async" width="220" height="151" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/20/Horseshoe_Curve_Penna2.jpg/330px-Horseshoe_Curve_Penna2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/20/Horseshoe_Curve_Penna2.jpg/440px-Horseshoe_Curve_Penna2.jpg 2x" data-file-width="1810" data-file-height="1240" /></a><figcaption>Three <a href="/wiki/Norfolk_Southern" class="mw-redirect" title="Norfolk Southern">Norfolk Southern</a> freight trains pass each other on the curve in 2006</figcaption></figure> <p>The curve remains busy as part of Norfolk Southern's Pittsburgh Line: as of 2008<sup class="plainlinks noexcerpt noprint asof-tag update" style="display:none;"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit">[update]</a></sup>, it was passed by 51 scheduled <a href="/wiki/Freight_rail_transport" class="mw-redirect" title="Freight rail transport">freight trains</a> each day, not including locals and <a href="/wiki/Bank_engine" title="Bank engine">helper engines</a>, which can double the number.<sup id="cite_ref-FOOTNOTEBorkowski2008109_42-0" class="reference"><a href="#cite_note-FOOTNOTEBorkowski2008109-42"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup> Coupled to the rear of long trains, helper engines add power going up and help to brake coming down. For some years before 2020, Norfolk Southern used <a href="/wiki/EMD_SD40#SD40_Rebuilds" title="EMD SD40">SD40Es</a> as helpers; since then, 4,300-horsepower (3,200 kW) <a href="/wiki/EMD_SD70ACU" class="mw-redirect" title="EMD SD70ACU">EMD SD70ACU</a> locomotives are used.<sup id="cite_ref-FOOTNOTEBorkowski2008112–113_43-0" class="reference"><a href="#cite_note-FOOTNOTEBorkowski2008112–113-43"><span class="cite-bracket">[</span>43<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTESeidel200831,_108_44-0" class="reference"><a href="#cite_note-FOOTNOTESeidel200831,_108-44"><span class="cite-bracket">[</span>44<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-45" class="reference"><a href="#cite_note-45"><span class="cite-bracket">[</span>45<span class="cite-bracket">]</span></a></sup> In 2012, Norfolk Southern said annual traffic passing Horseshoe Curve was 111.8 million short tons (101.4 <a href="/wiki/Tonne" title="Tonne">Mt</a>), including locomotives.<sup id="cite_ref-track_chart_7-2" class="reference"><a href="#cite_note-track_chart-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Amtrak" title="Amtrak">Amtrak</a>'s <i><a href="/wiki/Pennsylvanian_(train)" title="Pennsylvanian (train)">Pennsylvanian</a></i> between Pittsburgh and New York City rounds the curve once each way daily. Maximum speeds for trains at Horseshoe Curve are 30 miles per hour (48 km/h) for freight and about 35 miles per hour (56 km/h) for passenger trains. <sup id="cite_ref-46" class="reference"><a href="#cite_note-46"><span class="cite-bracket">[</span>46<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Trackside_attractions">Trackside attractions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit&section=7" title="Edit section: Trackside attractions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/Railroaders_Memorial_Museum" title="Railroaders Memorial Museum">Railroaders Memorial Museum</a> in Altoona manages a visitor center next to the curve.<sup id="cite_ref-Wrinn_47-0" class="reference"><a href="#cite_note-Wrinn-47"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup> The 6,800-square-foot (632 m<sup>2</sup>) center has historical artifacts and memorabilia relating to the curve and a <a href="/wiki/Raised-relief_map" title="Raised-relief map">raised-relief map</a> of the Altoona–<a href="/wiki/Johnstown,_Pennsylvania" title="Johnstown, Pennsylvania">Johnstown</a> area.<sup id="cite_ref-ob-rep_38-2" class="reference"><a href="#cite_note-ob-rep-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> Access to the curve is by a 288-foot (88 m) <a href="/wiki/Funicular" title="Funicular">funicular</a> or a 194-step stairway.<sup id="cite_ref-cupper_18-4" class="reference"><a href="#cite_note-cupper-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Wrinn_47-1" class="reference"><a href="#cite_note-Wrinn-47"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup> The funicular is single-tracked, with the cars passing each other halfway up the slope; the cars are painted to resemble Pennsylvania Railroad passenger cars.<sup id="cite_ref-ob-rep_38-3" class="reference"><a href="#cite_note-ob-rep-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> A former "watchman's shanty" is in the park.<sup id="cite_ref-48" class="reference"><a href="#cite_note-48"><span class="cite-bracket">[</span>48<span class="cite-bracket">]</span></a></sup> </p><p>Horseshoe Curve is popular with <a href="/wiki/Railfan" title="Railfan">railfans</a>; watchers can sometimes see three trains passing at once.<sup id="cite_ref-Wrinn_47-2" class="reference"><a href="#cite_note-Wrinn-47"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-49" class="reference"><a href="#cite_note-49"><span class="cite-bracket">[</span>49<span class="cite-bracket">]</span></a></sup> In August 2012, the former <a href="/wiki/New_York,_Chicago_and_St._Louis_Railroad" class="mw-redirect" title="New York, Chicago and St. Louis Railroad">Nickel Plate Road</a> (NKP) steam locomotive <a href="/wiki/Nickel_Plate_Road_765" title="Nickel Plate Road 765">No. 765</a> traversed Horseshoe Curve: the first steam locomotive to do so since 1977, while <a href="/wiki/Deadheading_(railroads)" class="mw-redirect" title="Deadheading (railroads)">deadheading</a> to and from Harrisburg as part of Norfolk Southern's <a href="/wiki/21st_Century_Steam" title="21st Century Steam">21st Century Steam</a> program.<sup id="cite_ref-50" class="reference"><a href="#cite_note-50"><span class="cite-bracket">[</span>50<span class="cite-bracket">]</span></a></sup> NKP 765 returned to the curve in May 2013 with public <a href="/wiki/Excursion_train" title="Excursion train">excursion trains</a> from Lewistown to Gallitzin.<sup id="cite_ref-51" class="reference"><a href="#cite_note-51"><span class="cite-bracket">[</span>51<span class="cite-bracket">]</span></a></sup> </p> <div class="thumb tnone" style="margin-left:auto;margin-right:auto;overflow:hidden;width:auto;max-width:988px"><div class="thumbinner"><div class="noresize" style="overflow:auto"><span typeof="mw:File"><a href="/wiki/File:Horseshoe_Curve_panorama.jpg" class="mw-file-description" title="A panorama of the observation park inside Horseshoe Curve, including the watchman's shanty (left), Locomotive 7048 (center), and the funicular (right) in October 2011"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/64/Horseshoe_Curve_panorama.jpg/980px-Horseshoe_Curve_panorama.jpg" decoding="async" width="980" height="225" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/64/Horseshoe_Curve_panorama.jpg/1470px-Horseshoe_Curve_panorama.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/64/Horseshoe_Curve_panorama.jpg/1960px-Horseshoe_Curve_panorama.jpg 2x" data-file-width="13874" data-file-height="3184" /></a></span></div><div class="thumbcaption"><div class="magnify"><a href="/wiki/File:Horseshoe_Curve_panorama.jpg" title="File:Horseshoe Curve panorama.jpg"> </a></div>A panorama of the observation park inside Horseshoe Curve, including the watchman's shanty (left), Locomotive 7048 (center), and the funicular (right) in October 2011</div></div></div> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit&section=8" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239009302">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid var(--border-color-base,#a2a9b1);padding:0.1em;background:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .portalbox-entry{display:table-row;font-size:85%;line-height:110%;height:1.9em;font-style:italic;font-weight:bold}.mw-parser-output .portalbox-image{display:table-cell;padding:0.2em;vertical-align:middle;text-align:center}.mw-parser-output .portalbox-link{display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle}@media(min-width:720px){.mw-parser-output .portalleft{clear:left;float:left;margin:0.5em 1em 0.5em 0}.mw-parser-output .portalright{clear:right;float:right;margin:0.5em 0 0.5em 1em}}</style><ul role="navigation" aria-label="Portals" class="noprint portalbox portalborder portalright"> <li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8b/HistoricPlacesNationalRegisterPlaque.JPG/32px-HistoricPlacesNationalRegisterPlaque.JPG" decoding="async" width="32" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8b/HistoricPlacesNationalRegisterPlaque.JPG/48px-HistoricPlacesNationalRegisterPlaque.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8b/HistoricPlacesNationalRegisterPlaque.JPG/64px-HistoricPlacesNationalRegisterPlaque.JPG 2x" data-file-width="2498" data-file-height="1969" /></span></span></span><span class="portalbox-link"><a href="/wiki/Portal:National_Register_of_Historic_Places" title="Portal:National Register of Historic Places">National Register of Historic Places portal</a></span></li><li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:P_train.svg" class="mw-file-description"><img alt="icon" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e3/P_train.svg/31px-P_train.svg.png" decoding="async" width="31" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e3/P_train.svg/47px-P_train.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e3/P_train.svg/62px-P_train.svg.png 2x" data-file-width="400" data-file-height="360" /></a></span></span><span class="portalbox-link"><a href="/wiki/Portal:Trains" title="Portal:Trains">Trains portal</a></span></li><li class="portalbox-entry"><span class="portalbox-image"><span class="mw-image-border noviewer" typeof="mw:File"><span><img alt="flag" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Flag_of_Pennsylvania.svg/32px-Flag_of_Pennsylvania.svg.png" decoding="async" width="32" height="23" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Flag_of_Pennsylvania.svg/48px-Flag_of_Pennsylvania.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Flag_of_Pennsylvania.svg/64px-Flag_of_Pennsylvania.svg.png 2x" data-file-width="740" data-file-height="540" /></span></span></span><span class="portalbox-link"><a href="/wiki/Portal:Pennsylvania" title="Portal:Pennsylvania">Pennsylvania portal</a></span></li></ul> <style data-mw-deduplicate="TemplateStyles:r1184024115">.mw-parser-output .div-col{margin-top:0.3em;column-width:30em}.mw-parser-output .div-col-small{font-size:90%}.mw-parser-output .div-col-rules{column-rule:1px solid #aaa}.mw-parser-output .div-col dl,.mw-parser-output .div-col ol,.mw-parser-output .div-col ul{margin-top:0}.mw-parser-output .div-col li,.mw-parser-output .div-col dd{page-break-inside:avoid;break-inside:avoid-column}</style><div class="div-col" style="column-width: 30em;"> <ul><li><a href="/wiki/Altoona_Curve" title="Altoona Curve">Altoona Curve</a>, a local <a href="/wiki/Baseball" title="Baseball">baseball</a> team named after the railroad curve.</li> <li><a href="/wiki/List_of_funicular_railways" title="List of funicular railways">List of funicular railways</a></li> <li><a href="/wiki/List_of_Historic_Civil_Engineering_Landmarks" title="List of Historic Civil Engineering Landmarks">List of Historic Civil Engineering Landmarks</a></li> <li><a href="/wiki/List_of_National_Historic_Landmarks_in_Pennsylvania" title="List of National Historic Landmarks in Pennsylvania">List of National Historic Landmarks in Pennsylvania</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Blair_County,_Pennsylvania" title="National Register of Historic Places listings in Blair County, Pennsylvania">National Register of Historic Places listings in Blair County, Pennsylvania</a></li> <li><a href="/wiki/Raurimu_Spiral" title="Raurimu Spiral">Raurimu Spiral</a></li> <li><a href="/wiki/Tehachapi_Loop" title="Tehachapi Loop">Tehachapi Loop</a></li></ul> </div> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit&section=9" title="Edit section: Notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-focus-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-focus_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-focus_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://npgallery.nps.gov/AssetDetail/NRIS/66000647">"Horsheshoe Curve"</a>. <i>NPSGallery</i>. <a href="/wiki/National_Park_Service" title="National Park Service">National Park Service</a><span class="reference-accessdate">. Retrieved <span class="nowrap">July 10,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=NPSGallery&rft.atitle=Horsheshoe+Curve&rft_id=http%3A%2F%2Fnpgallery.nps.gov%2FAssetDetail%2FNRIS%2F66000647&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTESeidel200818-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTESeidel200818_2-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFSeidel2008">Seidel 2008</a>, p. 18.</span> </li> <li id="cite_note-usgs-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-usgs_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-usgs_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation map cs1"><i>Hollidaysburg Quadrangle</i> (Map). 1 : 24,000. 7.5 Minute. <a href="/wiki/United_States_Geological_Survey" title="United States Geological Survey">United States Geological Survey</a>. 2013.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Hollidaysburg+Quadrangle&rft.series=7.5+Minute&rft.pub=United+States+Geological+Survey&rft.date=2013&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation map cs1"><i>Altoona Quadrangle</i> (Map). 1 : 24,000. 7.5 Minute. United States Geological Survey. 2013.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Altoona+Quadrangle&rft.series=7.5+Minute&rft.pub=United+States+Geological+Survey&rft.date=2013&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.legis.state.pa.us//WU01/LI/LI/US/HTM/1992/0/0120..HTM?66">Act of Dec. 4, 1992, P.L. 775, No. 120.</a></span> </li> <li id="cite_note-FOOTNOTEBorkowski2008112-6"><span class="mw-cite-backlink">^ <a href="#cite_ref-FOOTNOTEBorkowski2008112_6-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-FOOTNOTEBorkowski2008112_6-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><a href="#CITEREFBorkowski2008">Borkowski 2008</a>, p. 112.</span> </li> <li id="cite_note-track_chart-7"><span class="mw-cite-backlink">^ <a href="#cite_ref-track_chart_7-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-track_chart_7-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-track_chart_7-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEngineering_Design_and_Construction2012" class="citation book cs1">Engineering Design and Construction (2012). <a rel="nofollow" class="external text" href="http://www.multimodalways.org/docs/railroads/companies/NS/NS%20Track%20Charts/NS%20Pgh%20Division%20Track%20Chart%202012.pdf"><i>Pittsburgh Division</i></a> <span class="cs1-format">(PDF)</span>. Track Charts. <a href="/wiki/Atlanta,_Georgia" class="mw-redirect" title="Atlanta, Georgia">Atlanta, Georgia</a>: Norfolk Southern Railway. p. 026<span class="reference-accessdate">. Retrieved <span class="nowrap">February 1,</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Pittsburgh+Division&rft.place=Atlanta%2C+Georgia&rft.series=Track+Charts&rft.pages=026&rft.pub=Norfolk+Southern+Railway&rft.date=2012&rft.au=Engineering+Design+and+Construction&rft_id=http%3A%2F%2Fwww.multimodalways.org%2Fdocs%2Frailroads%2Fcompanies%2FNS%2FNS%2520Track%2520Charts%2FNS%2520Pgh%2520Division%2520Track%2520Chart%25202012.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTEGreenwood1975sec._7,_p._1-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-FOOTNOTEGreenwood1975sec._7,_p._1_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-FOOTNOTEGreenwood1975sec._7,_p._1_8-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><a href="#CITEREFGreenwood1975">Greenwood 1975</a>, sec. 7, p. 1.</span> </li> <li id="cite_note-FOOTNOTEGreenwood1975sec._8,_p._2-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-FOOTNOTEGreenwood1975sec._8,_p._2_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-FOOTNOTEGreenwood1975sec._8,_p._2_9-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-FOOTNOTEGreenwood1975sec._8,_p._2_9-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><a href="#CITEREFGreenwood1975">Greenwood 1975</a>, sec. 8, p. 2.</span> </li> <li id="cite_note-howe-10"><span class="mw-cite-backlink">^ <a href="#cite_ref-howe_10-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-howe_10-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-howe_10-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-howe_10-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHowe1954" class="citation news cs1">Howe, Ward Allan (February 14, 1954). "A Century-Old Wonder of Railroading". <i>The New York Times</i>. p. X25.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+New+York+Times&rft.atitle=A+Century-Old+Wonder+of+Railroading&rft.pages=X25&rft.date=1954-02-14&rft.aulast=Howe&rft.aufirst=Ward+Allan&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-elevation-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-elevation_11-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://earth.google.com/web/@40.49654224,-78.47473538,436.6448913a,3300.51870363d,35y,0h,0t,0r">"Horseshoe Curve Region"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">June 11,</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Horseshoe+Curve+Region&rft_id=https%3A%2F%2Fearth.google.com%2Fweb%2F%4040.49654224%2C-78.47473538%2C436.6448913a%2C3300.51870363d%2C35y%2C0h%2C0t%2C0r&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-RRgrades-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-RRgrades_12-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.trains.com/trn/train-basics/abcs-of-railroading/grades-and-curves/">"Grades and Curves"</a>. Trains<span class="reference-accessdate">. Retrieved <span class="nowrap">June 11,</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Grades+and+Curves&rft.pub=Trains&rft_id=https%3A%2F%2Fwww.trains.com%2Ftrn%2Ftrain-basics%2Fabcs-of-railroading%2Fgrades-and-curves%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTEGreenwood1975sec._8,_p._3-13"><span class="mw-cite-backlink">^ <a href="#cite_ref-FOOTNOTEGreenwood1975sec._8,_p._3_13-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-FOOTNOTEGreenwood1975sec._8,_p._3_13-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-FOOTNOTEGreenwood1975sec._8,_p._3_13-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><a href="#CITEREFGreenwood1975">Greenwood 1975</a>, sec. 8, p. 3.</span> </li> <li id="cite_note-FOOTNOTEBrown201543-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEBrown201543_14-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFBrown2015">Brown 2015</a>, p. 43.</span> </li> <li id="cite_note-FOOTNOTEGreenwood1975sec._8,_p._1-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEGreenwood1975sec._8,_p._1_15-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFGreenwood1975">Greenwood 1975</a>, sec. 8, p. 1.</span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1">"Marvel of engineering celebrating milestone". <i><a href="/wiki/Reading_Eagle" title="Reading Eagle">Reading Eagle</a></i>. Associated Press. June 30, 2004. p. B10.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Reading+Eagle&rft.atitle=Marvel+of+engineering+celebrating+milestone&rft.pages=B10&rft.date=2004-06-30&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-woods-17"><span class="mw-cite-backlink">^ <a href="#cite_ref-woods_17-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-woods_17-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWoods2010" class="citation web cs1">Woods, Claire (Spring 2010). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120801225851/http://www.pabook.libraries.psu.edu/palitmap/Horseshoe.html">"Up and Down 'Round and 'Round and Back Again"</a>. <i>Literary Map of Pennsylvania</i>. Pennsylvania Center of the Book, <a href="/wiki/Pennsylvania_State_University" title="Pennsylvania State University">Pennsylvania State University</a>. Archived from <a rel="nofollow" class="external text" href="http://pabook.libraries.psu.edu/palitmap/Horseshoe.html">the original</a> on August 1, 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">May 29,</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Literary+Map+of+Pennsylvania&rft.atitle=Up+and+Down+%27Round+and+%27Round+and+Back+Again&rft.ssn=spring&rft.date=2010&rft.aulast=Woods&rft.aufirst=Claire&rft_id=http%3A%2F%2Fpabook.libraries.psu.edu%2Fpalitmap%2FHorseshoe.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-cupper-18"><span class="mw-cite-backlink">^ <a href="#cite_ref-cupper_18-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-cupper_18-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-cupper_18-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-cupper_18-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-cupper_18-4"><sup><i><b>e</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCupper2004" class="citation journal cs1">Cupper, Dan (August 2004). "Horseshoe Fascination". <i><a href="/wiki/Trains_(magazine)" title="Trains (magazine)">Trains</a></i>. <b>64</b> (8). <a href="/wiki/Kalmbach_Publishing" class="mw-redirect" title="Kalmbach Publishing">Kalmbach</a>: 53.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Trains&rft.atitle=Horseshoe+Fascination&rft.volume=64&rft.issue=8&rft.pages=53&rft.date=2004-08&rft.aulast=Cupper&rft.aufirst=Dan&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTESeidel200818–19-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTESeidel200818–19_19-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFSeidel2008">Seidel 2008</a>, pp. 18–19.</span> </li> <li id="cite_note-coal-20"><span class="mw-cite-backlink">^ <a href="#cite_ref-coal_20-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-coal_20-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFUnited_States,_63rd_Congress1915" class="citation book cs1">United States, <a href="/wiki/63rd_United_States_Congress" title="63rd United States Congress">63rd Congress</a> (1915). <a rel="nofollow" class="external text" href="https://archive.org/details/transportationc01affagoog"><i>Transportation of Coal: Hearings before the Subcommittee of the Committee on Naval Affairs United States Senate</i></a>. Washington, DC: <a href="/wiki/United_States_Government_Printing_Office" class="mw-redirect" title="United States Government Printing Office">Government Printing Office</a>. p. <a rel="nofollow" class="external text" href="https://archive.org/details/transportationc01affagoog/page/n368">367</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Transportation+of+Coal%3A+Hearings+before+the+Subcommittee+of+the+Committee+on+Naval+Affairs+United+States+Senate&rft.place=Washington%2C+DC&rft.pages=367&rft.pub=Government+Printing+Office&rft.date=1915&rft.au=United+States%2C+63rd+Congress&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Ftransportationc01affagoog&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_book" title="Template:Cite book">cite book</a>}}</code>: CS1 maint: numeric names: authors list (<a href="/wiki/Category:CS1_maint:_numeric_names:_authors_list" title="Category:CS1 maint: numeric names: authors list">link</a>)</span></span> </li> <li id="cite_note-FOOTNOTESeidel200819,_25-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTESeidel200819,_25_21-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFSeidel2008">Seidel 2008</a>, pp. 19, 25.</span> </li> <li id="cite_note-22"><span class="mw-cite-backlink"><b><a href="#cite_ref-22">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKnight1899" class="citation journal cs1">Knight, Charles W (September 21, 1899). "Flood Water Channel of the Reservoirs of Altoona, Pa". <i>Engineering News and American Railway News</i>. <b>XLII</b> (12): 200.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Engineering+News+and+American+Railway+News&rft.atitle=Flood+Water+Channel+of+the+Reservoirs+of+Altoona%2C+Pa&rft.volume=XLII&rft.issue=12&rft.pages=200&rft.date=1899-09-21&rft.aulast=Knight&rft.aufirst=Charles+W&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-23">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation journal cs1">"Altoona Has Solved Its Water Problems". <i>Municipal Journal</i>. <b>XXXV</b> (23): 771. December 4, 1913.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Municipal+Journal&rft.atitle=Altoona+Has+Solved+Its+Water+Problems&rft.volume=XXXV&rft.issue=23&rft.pages=771&rft.date=1913-12-04&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTESeidel200843-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTESeidel200843_24-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFSeidel2008">Seidel 2008</a>, p. 43.</span> </li> <li id="cite_note-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-25">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFElyWatkins1893" class="citation book cs1">Ely, Theo N; Watkins, J. Elfreth (1893). <i>Catalogue of the exhibit of the Pennsylvania Railroad Company at the World's Columbian Exposition</i>. Chicago: Pennsylvania Railroad. p. 13.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Catalogue+of+the+exhibit+of+the+Pennsylvania+Railroad+Company+at+the+World%27s+Columbian+Exposition&rft.place=Chicago&rft.pages=13&rft.pub=Pennsylvania+Railroad&rft.date=1893&rft.aulast=Ely&rft.aufirst=Theo+N&rft.au=Watkins%2C+J.+Elfreth&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTESeidel2008113-26"><span class="mw-cite-backlink">^ <a href="#cite_ref-FOOTNOTESeidel2008113_26-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-FOOTNOTESeidel2008113_26-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><a href="#CITEREFSeidel2008">Seidel 2008</a>, p. 113.</span> </li> <li id="cite_note-FOOTNOTECohen200247-27"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTECohen200247_27-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFCohen2002">Cohen 2002</a>, p. 47.</span> </li> <li id="cite_note-FOOTNOTECohen200246–47-28"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTECohen200246–47_28-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFCohen2002">Cohen 2002</a>, pp. 46–47.</span> </li> <li id="cite_note-FOOTNOTECohen200253-29"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTECohen200253_29-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFCohen2002">Cohen 2002</a>, p. 53.</span> </li> <li id="cite_note-30"><span class="mw-cite-backlink"><b><a href="#cite_ref-30">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMichelmore1991" class="citation news cs1">Michelmore, David L (February 19, 1991). "Railroaders remember glory days, downside". <i><a href="/wiki/Pittsburgh_Post-Gazette" title="Pittsburgh Post-Gazette">Pittsburgh Post-Gazette</a></i>. p. 7.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Pittsburgh+Post-Gazette&rft.atitle=Railroaders+remember+glory+days%2C+downside&rft.pages=7&rft.date=1991-02-19&rft.aulast=Michelmore&rft.aufirst=David+L&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-31"><span class="mw-cite-backlink"><b><a href="#cite_ref-31">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation magazine cs1">"Horseshoe Centenary". <i><a href="/wiki/Life_(magazine)" title="Life (magazine)">Life</a></i>. <a href="/wiki/Henry_Luce" title="Henry Luce">Henry Luce</a>. November 1, 1954. p. 37.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Life&rft.atitle=Horseshoe+Centenary&rft.pages=37&rft.date=1954-11-01&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTEStauferPennypacker1962161-32"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEStauferPennypacker1962161_32-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFStauferPennypacker1962">Staufer & Pennypacker 1962</a>, p. 161.</span> </li> <li id="cite_note-FOOTNOTEStauferPennypacker1962159-33"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEStauferPennypacker1962159_33-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFStauferPennypacker1962">Staufer & Pennypacker 1962</a>, p. 159.</span> </li> <li id="cite_note-34"><span class="mw-cite-backlink"><b><a href="#cite_ref-34">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.nps.gov/nhl/find/statelists/LIST14.pdf">"List of National Historic Landmarks by State"</a> <span class="cs1-format">(PDF)</span>. <i>National Historic Landmarks Program</i>. National Park Service. October 2014. p. 83<span class="reference-accessdate">. Retrieved <span class="nowrap">February 20,</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=National+Historic+Landmarks+Program&rft.atitle=List+of+National+Historic+Landmarks+by+State&rft.pages=83&rft.date=2014-10&rft_id=http%3A%2F%2Fwww.nps.gov%2Fnhl%2Ffind%2Fstatelists%2FLIST14.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-35"><span class="mw-cite-backlink"><b><a href="#cite_ref-35">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1">"Horseshoe Curve Park is Approved". <i>The Daily News</i>. <a href="/wiki/Huntingdon,_Pennsylvania" title="Huntingdon, Pennsylvania">Huntingdon</a> and <a href="/wiki/Mount_Union,_Pennsylvania" title="Mount Union, Pennsylvania">Mount Union, Pennsylvania</a>. May 28, 1957. p. 3.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Daily+News&rft.atitle=Horseshoe+Curve+Park+is+Approved&rft.pages=3&rft.date=1957-05-28&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-36"><span class="mw-cite-backlink"><b><a href="#cite_ref-36">^</a></b></span> <span class="reference-text">For a description and photos of the curve when it still had four tracks, see "Rail Guide to the Horseshoe Curve." (1976, PC Publications).</span> </li> <li id="cite_note-37"><span class="mw-cite-backlink"><b><a href="#cite_ref-37">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation journal cs1">"Half century of change". <i>Trains</i>. <b>64</b> (8). Kalmbach: 56. August 2004.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Trains&rft.atitle=Half+century+of+change&rft.volume=64&rft.issue=8&rft.pages=56&rft.date=2004-08&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-ob-rep-38"><span class="mw-cite-backlink">^ <a href="#cite_ref-ob-rep_38-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-ob-rep_38-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-ob-rep_38-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-ob-rep_38-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://news.google.com/newspapers?id=MIJeAAAAIBAJ&sjid=8WENAAAAIBAJ&pg=1186,186474">"Renovated Horseshoe Curve museum expecting many tourists this year"</a>. <i><a href="/wiki/Observer-Reporter" class="mw-redirect" title="Observer-Reporter">Observer-Reporter</a></i>. <a href="/wiki/Washington,_Pennsylvania" title="Washington, Pennsylvania">Washington, Pennsylvania</a>. March 1, 1992. p. F5<span class="reference-accessdate">. Retrieved <span class="nowrap">March 5,</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Observer-Reporter&rft.atitle=Renovated+Horseshoe+Curve+museum+expecting+many+tourists+this+year&rft.pages=F5&rft.date=1992-03-01&rft_id=https%3A%2F%2Fnews.google.com%2Fnewspapers%3Fid%3DMIJeAAAAIBAJ%26sjid%3D8WENAAAAIBAJ%26pg%3D1186%2C186474&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-150th-39"><span class="mw-cite-backlink"><b><a href="#cite_ref-150th_39-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation journal cs1">"Horseshoe Curve's 150th: Fireworks and Flashbulbs". <i>Trains</i>. <b>64</b> (6). Kalmbach: 14. June 2004.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Trains&rft.atitle=Horseshoe+Curve%27s+150th%3A+Fireworks+and+Flashbulbs&rft.volume=64&rft.issue=6&rft.pages=14&rft.date=2004-06&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-40"><span class="mw-cite-backlink"><b><a href="#cite_ref-40">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation journal cs1">"Horseshoe Curve's bright birthday party". <i>Trains</i>. <b>64</b> (10). Kalmbach: 16. October 2004.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Trains&rft.atitle=Horseshoe+Curve%27s+bright+birthday+party&rft.volume=64&rft.issue=10&rft.pages=16&rft.date=2004-10&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-41"><span class="mw-cite-backlink"><b><a href="#cite_ref-41">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation journal cs1">"Horseshoe Curve Designated a Civil Engineering Landmark". <i>ASCE News</i>. <b>29</b> (4). <a href="/wiki/American_Society_of_Civil_Engineers" title="American Society of Civil Engineers">American Society of Civil Engineers</a>: 10. April 2004.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=ASCE+News&rft.atitle=Horseshoe+Curve+Designated+a+Civil+Engineering+Landmark&rft.volume=29&rft.issue=4&rft.pages=10&rft.date=2004-04&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTEBorkowski2008109-42"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEBorkowski2008109_42-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFBorkowski2008">Borkowski 2008</a>, p. 109.</span> </li> <li id="cite_note-FOOTNOTEBorkowski2008112–113-43"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEBorkowski2008112–113_43-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFBorkowski2008">Borkowski 2008</a>, pp. 112–113.</span> </li> <li id="cite_note-FOOTNOTESeidel200831,_108-44"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTESeidel200831,_108_44-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFSeidel2008">Seidel 2008</a>, pp. 31, 108.</span> </li> <li id="cite_note-45"><span class="mw-cite-backlink"><b><a href="#cite_ref-45">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation journal cs1"><a rel="nofollow" class="external text" href="http://www.nscorp.com/nscorphtml/bizns/bzns1211/NovDecBizNS_WEB.pdf">"With a proud legacy, Juniata plays a key role in NS' future"</a> <span class="cs1-format">(PDF)</span>. <i>BizNS</i>. <b>3</b> (6). Norfolk Southern Railway: 5. November–December 2011<span class="reference-accessdate">. Retrieved <span class="nowrap">February 23,</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=BizNS&rft.atitle=With+a+proud+legacy%2C+Juniata+plays+a+key+role+in+NS%27+future&rft.volume=3&rft.issue=6&rft.pages=5&rft.date=2011-11%2F2011-12&rft_id=http%3A%2F%2Fwww.nscorp.com%2Fnscorphtml%2Fbizns%2Fbzns1211%2FNovDecBizNS_WEB.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-46"><span class="mw-cite-backlink"><b><a href="#cite_ref-46">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><i>Pittsburgh Division Timetable</i> (2012 ed.). Norfolk Southern Corp. 2012.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Pittsburgh+Division+Timetable&rft.edition=2012&rft.pub=Norfolk+Southern+Corp&rft.date=2012&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-Wrinn-47"><span class="mw-cite-backlink">^ <a href="#cite_ref-Wrinn_47-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Wrinn_47-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Wrinn_47-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWrinn2009" class="citation book cs1">Wrinn, Jim, ed. (2009). <i>Tourist Trains Guidebook</i> (2nd ed.). <a href="/wiki/Waukesha,_Wisconsin" title="Waukesha, Wisconsin">Waukesha, Wisconsin</a>: Kalmbach. p. 199.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Tourist+Trains+Guidebook&rft.place=Waukesha%2C+Wisconsin&rft.pages=199&rft.edition=2nd&rft.pub=Kalmbach&rft.date=2009&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-48"><span class="mw-cite-backlink"><b><a href="#cite_ref-48">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTreese2003" class="citation book cs1">Treese, Lorett (2003). <i>Railroads of Pennsylvania: Fragments of the Past in the Keystone Landscape</i>. <a href="/wiki/Mechanicsburg,_Pennsylvania" title="Mechanicsburg, Pennsylvania">Mechanicsburg, Pennsylvania</a>: <a href="/wiki/Stackpole_Books" title="Stackpole Books">Stackpole Books</a>. p. 203. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-8117-2622-3" title="Special:BookSources/0-8117-2622-3"><bdi>0-8117-2622-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Railroads+of+Pennsylvania%3A+Fragments+of+the+Past+in+the+Keystone+Landscape&rft.place=Mechanicsburg%2C+Pennsylvania&rft.pages=203&rft.pub=Stackpole+Books&rft.date=2003&rft.isbn=0-8117-2622-3&rft.aulast=Treese&rft.aufirst=Lorett&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-49"><span class="mw-cite-backlink"><b><a href="#cite_ref-49">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBarry2009" class="citation news cs1">Barry, Dan (November 3, 2009). <a rel="nofollow" class="external text" href="https://www.nytimes.com/2009/11/08/weekinreview/08barry.html">"Awesome Train Set, Mr. Buffett"</a>. <i>The New York Times</i><span class="reference-accessdate">. Retrieved <span class="nowrap">February 19,</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+New+York+Times&rft.atitle=Awesome+Train+Set%2C+Mr.+Buffett&rft.date=2009-11-03&rft.aulast=Barry&rft.aufirst=Dan&rft_id=https%3A%2F%2Fwww.nytimes.com%2F2009%2F11%2F08%2Fweekinreview%2F08barry.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-50"><span class="mw-cite-backlink"><b><a href="#cite_ref-50">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKibler2012" class="citation news cs1">Kibler, William (August 18, 2012). <a rel="nofollow" class="external text" href="http://www.altoonamirror.com/page/content.detail/id/563479/Steam-engine-passing-through-Altoona.html">"Steam engine passes through Altoona"</a>. <i><a href="/wiki/Altoona_Mirror" title="Altoona Mirror">Altoona Mirror</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">June 23,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Altoona+Mirror&rft.atitle=Steam+engine+passes+through+Altoona&rft.date=2012-08-18&rft.aulast=Kibler&rft.aufirst=William&rft_id=http%3A%2F%2Fwww.altoonamirror.com%2Fpage%2Fcontent.detail%2Fid%2F563479%2FSteam-engine-passing-through-Altoona.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> <li id="cite_note-51"><span class="mw-cite-backlink"><b><a href="#cite_ref-51">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKibler2013" class="citation news cs1">Kibler, William (March 4, 2013). <a rel="nofollow" class="external text" href="http://www.altoonamirror.com/page/content.detail/id/569393/Locomotive-set-for-more-visits.html">"Locomotive set for more visits"</a>. <i>Altoona Mirror</i><span class="reference-accessdate">. Retrieved <span class="nowrap">June 23,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Altoona+Mirror&rft.atitle=Locomotive+set+for+more+visits&rft.date=2013-03-04&rft.aulast=Kibler&rft.aufirst=William&rft_id=http%3A%2F%2Fwww.altoonamirror.com%2Fpage%2Fcontent.detail%2Fid%2F569393%2FLocomotive-set-for-more-visits.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit&section=10" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBorkowski2008" class="citation book cs1">Borkowski, Richard C. Jr. (2008). <i>Norfolk Southern Railway</i>. <a href="/wiki/Minneapolis" title="Minneapolis">Minneapolis</a>: <a href="/wiki/Voyageur_Press" class="mw-redirect" title="Voyageur Press">Voyageur Press</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7603-3249-8" title="Special:BookSources/978-0-7603-3249-8"><bdi>978-0-7603-3249-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Norfolk+Southern+Railway&rft.place=Minneapolis&rft.pub=Voyageur+Press&rft.date=2008&rft.isbn=978-0-7603-3249-8&rft.aulast=Borkowski&rft.aufirst=Richard+C.+Jr.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBrown2015" class="citation journal cs1">Brown, Jeff L. (January 2015). <a rel="nofollow" class="external text" href="http://www.civilengineering-digital.com/civilengineering/january_2015">"Around the Bend: Horseshoe Curve"</a>. <i>Civil Engineering</i>. American Society of Civil Engineers: 42–45. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0885-7024">0885-7024</a><span class="reference-accessdate">. Retrieved <span class="nowrap">February 26,</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Civil+Engineering&rft.atitle=Around+the+Bend%3A+Horseshoe+Curve&rft.pages=42-45&rft.date=2015-01&rft.issn=0885-7024&rft.aulast=Brown&rft.aufirst=Jeff+L.&rft_id=http%3A%2F%2Fwww.civilengineering-digital.com%2Fcivilengineering%2Fjanuary_2015&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCohen2002" class="citation journal cs1">Cohen, Gary (February 2002). "The Keystone Kommandos". <i><a href="/wiki/The_Atlantic" title="The Atlantic">The Atlantic Monthly</a></i>. <b>289</b> (2): 46–59. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1072-7825">1072-7825</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Atlantic+Monthly&rft.atitle=The+Keystone+Kommandos&rft.volume=289&rft.issue=2&rft.pages=46-59&rft.date=2002-02&rft.issn=1072-7825&rft.aulast=Cohen&rft.aufirst=Gary&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGreenwood1975" class="citation web cs1">Greenwood, Richard (August 9, 1975). <a rel="nofollow" class="external text" href="https://npgallery.nps.gov/NRHP/GetAsset/NHLS/66000647_text">"Horseshoe Curve"</a> <span class="cs1-format">(PDF)</span>. <i>National Register of Historic Places—Nomination Form</i>. National Park Service<span class="reference-accessdate">. Retrieved <span class="nowrap">January 30,</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=National+Register+of+Historic+Places%26mdash%3BNomination+Form&rft.atitle=Horseshoe+Curve&rft.date=1975-08-09&rft.aulast=Greenwood&rft.aufirst=Richard&rft_id=https%3A%2F%2Fnpgallery.nps.gov%2FNRHP%2FGetAsset%2FNHLS%2F66000647_text&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSeidel2008" class="citation book cs1">Seidel, David W. (2008). <i>Horseshoe Curve</i>. Images of Rail. <a href="/wiki/Charleston,_South_Carolina" title="Charleston, South Carolina">Charleston, South Carolina</a>: <a href="/wiki/Arcadia_Publishing" title="Arcadia Publishing">Arcadia Publishing</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7385-5707-6" title="Special:BookSources/978-0-7385-5707-6"><bdi>978-0-7385-5707-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Horseshoe+Curve&rft.place=Charleston%2C+South+Carolina&rft.series=Images+of+Rail&rft.pub=Arcadia+Publishing&rft.date=2008&rft.isbn=978-0-7385-5707-6&rft.aulast=Seidel&rft.aufirst=David+W.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStauferPennypacker1962" class="citation book cs1">Staufer, Alvin F.; Pennypacker, Bert (1962). <i>Pennsy Power: Steam and Electric Locomotives of the Pennsylvania Railroad, 1900-1957</i>. Research by Martin Flattley. Carollton, Ohio: Alvin F. Staufer. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-9445-1304-0" title="Special:BookSources/978-0-9445-1304-0"><bdi>978-0-9445-1304-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Pennsy+Power%3A+Steam+and+Electric+Locomotives+of+the+Pennsylvania+Railroad%2C+1900-1957&rft.place=Carollton%2C+Ohio&rft.pub=Alvin+F.+Staufer&rft.date=1962&rft.isbn=978-0-9445-1304-0&rft.aulast=Staufer&rft.aufirst=Alvin+F.&rft.au=Pennypacker%2C+Bert&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHorseshoe+Curve+%28Pennsylvania%29" class="Z3988"></span></li></ul> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&action=edit&section=11" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Horseshoe_Curve" class="extiw" title="commons:Category:Horseshoe Curve">Horseshoe Curve</a></span>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="https://www.bedfordfineartgallery.com/p_l_bierce_locomotives.html">Pennsylvania Locomotives on Horseshoe Curve</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="City_of_Altoona" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Altoona,_Pennsylvania" title="Template:Altoona, Pennsylvania"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Altoona,_Pennsylvania" title="Template talk:Altoona, Pennsylvania"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Altoona,_Pennsylvania" title="Special:EditPage/Template:Altoona, Pennsylvania"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="City_of_Altoona" style="font-size:114%;margin:0 4em"><a href="/wiki/Altoona,_Pennsylvania" title="Altoona, Pennsylvania">City of Altoona</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Attractions</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Horseshoe Curve</a></li> <li><a href="/wiki/Lakemont_Park" title="Lakemont Park">Lakemont Park</a> <ul><li><a href="/wiki/Leap-The-Dips" title="Leap-The-Dips">Leap-The-Dips</a></li></ul></li> <li><a href="/wiki/Mishler_Theatre" title="Mishler Theatre">Mishler Theatre</a></li> <li><a href="/wiki/Logan_Valley_Mall" title="Logan Valley Mall">Logan Valley Mall</a></li> <li><a href="/wiki/Penn_Alto_Building" title="Penn Alto Building">Penn Alto Building</a></li> <li><a href="/wiki/Railroaders_Memorial_Museum" title="Railroaders Memorial Museum">Railroaders Memorial Museum</a></li> <li><a href="/wiki/Allegheny_Portage_Railroad" title="Allegheny Portage Railroad">Allegheny Portage Railroad</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Transportation</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Altoona_Transportation_Center" title="Altoona Transportation Center">Altoona Transportation Center</a></li> <li><a href="/wiki/Altoona%E2%80%93Blair_County_Airport" title="Altoona–Blair County Airport">Altoona–Blair County Airport</a></li> <li><a href="/wiki/Altoona_Metro_Transit" title="Altoona Metro Transit">AMTRAN</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Religion</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cathedral_of_the_Blessed_Sacrament_(Altoona,_Pennsylvania)" title="Cathedral of the Blessed Sacrament (Altoona, Pennsylvania)">Cathedral of the Blessed Sacrament</a></li> <li><a href="/wiki/Roman_Catholic_Diocese_of_Altoona%E2%80%93Johnstown" title="Roman Catholic Diocese of Altoona–Johnstown">Roman Catholic Diocese</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Education</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Penn_State_Altoona" title="Penn State Altoona">Penn State Altoona</a></li> <li><a href="/wiki/Bishop_Guilfoyle_High_School" title="Bishop Guilfoyle High School">Bishop Guilfoyle High School</a></li> <li><a href="/wiki/Altoona_Area_School_District" title="Altoona Area School District">Altoona Area School District</a></li> <li><a href="/wiki/Altoona_Area_High_School" title="Altoona Area High School">Altoona Area High School</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Industry</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/UPMC_Altoona" title="UPMC Altoona">UPMC Altoona</a></li> <li><a href="/wiki/Altoona_Works" title="Altoona Works">Altoona Works</a></li> <li><a href="/wiki/Boyer_(candy_company)" title="Boyer (candy company)">Boyer Candies</a></li> <li><a href="/wiki/Sheetz" title="Sheetz">Sheetz</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Sports</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Altoona_Curve" title="Altoona Curve">Altoona Curve</a></li> <li><a href="/wiki/Peoples_Natural_Gas_Field" title="Peoples Natural Gas Field">Peoples Natural Gas Field</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Newspapers</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Altoona_Mirror" title="Altoona Mirror">Altoona Mirror</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Television</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks hlist navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/WPSU-TV" title="WPSU-TV">WPSU-TV</a> (3.1 <a href="/wiki/PBS" title="PBS">PBS</a>, 3.2 <a href="/wiki/Create_(TV_network)" title="Create (TV network)">Create</a>, 3.3 <a href="/wiki/World_Channel" title="World Channel">World</a>, 3.4 <a href="/wiki/PBS_Kids" title="PBS Kids">PBS Kids</a>)</li> <li><a href="/wiki/WJAC-TV" title="WJAC-TV">WJAC-TV</a> (6.1 <a href="/wiki/NBC" title="NBC">NBC</a>, 6.2 <a href="/wiki/Charge!_(TV_network)" title="Charge! (TV network)">Charge!</a>, 6.3 <a href="/wiki/Comet_(TV_network)" title="Comet (TV network)">Comet</a>, 6.4 <a href="/wiki/The_CW_Plus" title="The CW Plus">CW+</a>)</li> <li><a href="/wiki/WWCP-TV" title="WWCP-TV">WWCP-TV</a> (8.1 <a href="/wiki/Fox_Broadcasting_Company" title="Fox Broadcasting Company">Fox</a>, <a href="/wiki/WATM-TV" title="WATM-TV">8.2</a> <a href="/wiki/American_Broadcasting_Company" title="American Broadcasting Company">ABC</a>, 8.3 <a href="/wiki/TBD_(TV_network)" title="TBD (TV network)">TBD</a>, 8.4 <a href="/wiki/Get_(TV_network)" title="Get (TV network)">Get</a>)</li> <li><a href="/wiki/WTAJ-TV" title="WTAJ-TV">WTAJ-TV</a> (10.1 <a href="/wiki/CBS" title="CBS">CBS</a>, 10.2 <a href="/wiki/Ion_Mystery" title="Ion Mystery">Mystery</a>, 10.3 <a href="/wiki/Laff_(TV_network)" title="Laff (TV network)">Laff</a>, 10.4 <a href="/wiki/Grit_(TV_network)" title="Grit (TV network)">Grit</a>)</li> <li><a href="/wiki/WATM-TV" title="WATM-TV">WATM-TV</a> (23.1 <a href="/wiki/American_Broadcasting_Company" title="American Broadcasting Company">ABC</a>, <a href="/wiki/WWCP-TV" title="WWCP-TV">23.2</a> <a href="/wiki/Fox_Broadcasting_Company" title="Fox Broadcasting Company">Fox</a>, 23.3 <a href="/wiki/Cozi_TV" title="Cozi TV">Cozi</a>, 23.4 <a href="/wiki/Merit_Street_Media" class="mw-redirect" title="Merit Street Media">Merit</a>)</li> <li><a href="/wiki/WKBS-TV" title="WKBS-TV">WKBS-TV</a> (47.1 <a href="/wiki/Cornerstone_Television" title="Cornerstone Television">COR</a>, 47.2 <a href="/wiki/Court_TV" title="Court TV">Court</a>, 47.3 <a href="/wiki/Bounce_TV" title="Bounce TV">Bounce</a>, 47.4 <a href="/wiki/Ion_Television" title="Ion Television">Ion</a>, 47.5 <a href="/wiki/Dabl" title="Dabl">Dabl</a>, 47.6 <a href="/wiki/Ion_Plus" title="Ion Plus">Ion+</a>, 47.7 [blank], 47.8 <a href="/wiki/Scripps_News" title="Scripps News">Scripps</a>, <a href="/wiki/WPCB-TV" title="WPCB-TV">47.9</a> Faith & Family)</li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Radio</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks hlist navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/W207CN" class="mw-redirect" title="W207CN">W207CN</a></li> <li><a href="/wiki/W241CQ" class="mw-redirect" title="W241CQ">W241CQ</a></li> <li><a href="/wiki/W245CZ" class="mw-redirect" title="W245CZ">W245CZ</a></li> <li><a href="/wiki/W249DD" class="mw-redirect" title="W249DD">W249DD</a></li> <li><a href="/wiki/W253CJ" class="mw-redirect" title="W253CJ">W253CJ</a></li> <li><a href="/wiki/W264BZ" class="mw-redirect" title="W264BZ">W264BZ</a></li> <li><a href="/wiki/W273BE" class="mw-redirect" title="W273BE">W273BE</a></li> <li><a href="/wiki/W274BE" class="mw-redirect" title="W274BE">W274BE</a></li> <li><a href="/wiki/W294AE" class="mw-redirect" title="W294AE">W294AE</a></li> <li><a href="/wiki/WALY_(FM)" title="WALY (FM)">WALY</a></li> <li><a href="/wiki/WBRX" title="WBRX">WBRX</a></li> <li><a href="/wiki/WBXQ" title="WBXQ">WBXQ</a></li> <li><a href="/wiki/WDBF-FM" title="WDBF-FM">WDBF-FM</a></li> <li><a href="/wiki/WFBG" title="WFBG">WFBG</a></li> <li><a href="/wiki/WFGY" title="WFGY">WFGY</a></li> <li><a href="/wiki/WHHN" title="WHHN">WHHN</a></li> <li><a href="/wiki/WHUN_(AM)" title="WHUN (AM)">WHUN</a></li> <li><a href="/wiki/WHUN_(AM)" title="WHUN (AM)">WHUN-FM</a></li> <li><a href="/wiki/WJSM" title="WJSM">WJSM</a></li> <li><a href="/wiki/WJSM" title="WJSM">WJSM-FM</a></li> <li><a href="/wiki/WKMC" title="WKMC">WKMC</a></li> <li><a href="/wiki/WLKE" title="WLKE">WLKE</a></li> <li>WMES-LP</li> <li>WMMH</li> <li><a href="/wiki/WNG589" class="mw-redirect" title="WNG589">WNG589</a></li> <li><a href="/wiki/WQWY" title="WQWY">WQWY</a></li> <li><a href="/wiki/WRKY-FM" title="WRKY-FM">WRKY-FM</a></li> <li><a href="/wiki/WRTA_(AM)" title="WRTA (AM)">WRTA</a></li> <li><a href="/wiki/WTNA" title="WTNA">WTNA</a></li> <li><a href="/wiki/WTRN" title="WTRN">WTRN</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="US_National_Register_of_Historic_Places_in_Pennsylvania" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="3" style="background-color:#A8EDEF;color:black"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:National_Register_of_Historic_Places_in_Pennsylvania" title="Template:National Register of Historic Places in Pennsylvania"><abbr title="View this template" style="color:black">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:National_Register_of_Historic_Places_in_Pennsylvania" title="Template talk:National Register of Historic Places in Pennsylvania"><abbr title="Discuss this template" style="color:black">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:National_Register_of_Historic_Places_in_Pennsylvania" title="Special:EditPage/Template:National Register of Historic Places in Pennsylvania"><abbr title="Edit this template" style="color:black">e</abbr></a></li></ul></div><div id="US_National_Register_of_Historic_Places_in_Pennsylvania" style="font-size:114%;margin:0 4em"><a href="/wiki/National_Register_of_Historic_Places_listings_in_Pennsylvania" title="National Register of Historic Places listings in Pennsylvania">US National Register of Historic Places in Pennsylvania</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#A8EDEF;color:black">Topics</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Contributing_property" title="Contributing property">Contributing property</a></li> <li><a href="/wiki/Keeper_of_the_Register" title="Keeper of the Register">Keeper of the Register</a></li> <li><a href="/wiki/Historic_districts_in_the_United_States" title="Historic districts in the United States">Historic district</a></li> <li><a href="/wiki/History_of_the_National_Register_of_Historic_Places" title="History of the National Register of Historic Places">History of the National Register of Historic Places</a></li> <li><a href="/wiki/National_Park_Service" title="National Park Service">National Park Service</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_property_types" title="National Register of Historic Places property types">Property types</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="4" style="width:1px;padding:0 0 0 2px"><div><span class="mw-default-size" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/97/Logo_of_the_United_States_National_Park_Service.svg/50px-Logo_of_the_United_States_National_Park_Service.svg.png" decoding="async" width="50" height="65" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/97/Logo_of_the_United_States_National_Park_Service.svg/75px-Logo_of_the_United_States_National_Park_Service.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/97/Logo_of_the_United_States_National_Park_Service.svg/100px-Logo_of_the_United_States_National_Park_Service.svg.png 2x" data-file-width="553" data-file-height="720" /></span></span><br /><br /><span class="mw-default-size" typeof="mw:File"><a href="/wiki/File:Map_of_USA_PA.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Map_of_USA_PA.svg/100px-Map_of_USA_PA.svg.png" decoding="async" width="100" height="65" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Map_of_USA_PA.svg/151px-Map_of_USA_PA.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Map_of_USA_PA.svg/200px-Map_of_USA_PA.svg.png 2x" data-file-width="286" data-file-height="186" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#A8EDEF;color:black">Lists by county</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Adams_County,_Pennsylvania" title="National Register of Historic Places listings in Adams County, Pennsylvania">Adams</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Allegheny_County,_Pennsylvania" title="National Register of Historic Places listings in Allegheny County, Pennsylvania">Allegheny</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Armstrong_County,_Pennsylvania" title="National Register of Historic Places listings in Armstrong County, Pennsylvania">Armstrong</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Beaver_County,_Pennsylvania" title="National Register of Historic Places listings in Beaver County, Pennsylvania">Beaver</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Bedford_County,_Pennsylvania" title="National Register of Historic Places listings in Bedford County, Pennsylvania">Bedford</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Berks_County,_Pennsylvania" title="National Register of Historic Places listings in Berks County, Pennsylvania">Berks</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Blair_County,_Pennsylvania" title="National Register of Historic Places listings in Blair County, Pennsylvania">Blair</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Bradford_County,_Pennsylvania" title="National Register of Historic Places listings in Bradford County, Pennsylvania">Bradford</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Bucks_County,_Pennsylvania" title="National Register of Historic Places listings in Bucks County, Pennsylvania">Bucks</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Butler_County,_Pennsylvania" title="National Register of Historic Places listings in Butler County, Pennsylvania">Butler</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Cambria_County,_Pennsylvania" title="National Register of Historic Places listings in Cambria County, Pennsylvania">Cambria</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Cameron_County,_Pennsylvania" title="National Register of Historic Places listings in Cameron County, Pennsylvania">Cameron</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Carbon_County,_Pennsylvania" title="National Register of Historic Places listings in Carbon County, Pennsylvania">Carbon</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Centre_County,_Pennsylvania" title="National Register of Historic Places listings in Centre County, Pennsylvania">Centre</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Chester_County,_Pennsylvania" title="National Register of Historic Places listings in Chester County, Pennsylvania">Chester</a> <ul><li><a href="/wiki/National_Register_of_Historic_Places_listings_in_eastern_Chester_County,_Pennsylvania" title="National Register of Historic Places listings in eastern Chester County, Pennsylvania">East</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_northern_Chester_County,_Pennsylvania" title="National Register of Historic Places listings in northern Chester County, Pennsylvania">North</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_southern_Chester_County,_Pennsylvania" title="National Register of Historic Places listings in southern Chester County, Pennsylvania">South</a></li></ul></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Clarion_County,_Pennsylvania" title="National Register of Historic Places listings in Clarion County, Pennsylvania">Clarion</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Clearfield_County,_Pennsylvania" title="National Register of Historic Places listings in Clearfield County, Pennsylvania">Clearfield</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Clinton_County,_Pennsylvania" title="National Register of Historic Places listings in Clinton County, Pennsylvania">Clinton</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Columbia_County,_Pennsylvania" title="National Register of Historic Places listings in Columbia County, Pennsylvania">Columbia</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Crawford_County,_Pennsylvania" title="National Register of Historic Places listings in Crawford County, Pennsylvania">Crawford</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Cumberland_County,_Pennsylvania" title="National Register of Historic Places listings in Cumberland County, Pennsylvania">Cumberland</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Dauphin_County,_Pennsylvania" title="National Register of Historic Places listings in Dauphin County, Pennsylvania">Dauphin</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Delaware_County,_Pennsylvania" title="National Register of Historic Places listings in Delaware County, Pennsylvania">Delaware</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Elk_County,_Pennsylvania" title="National Register of Historic Places listings in Elk County, Pennsylvania">Elk</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Erie_County,_Pennsylvania" title="National Register of Historic Places listings in Erie County, Pennsylvania">Erie</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Fayette_County,_Pennsylvania" title="National Register of Historic Places listings in Fayette County, Pennsylvania">Fayette</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Forest_County,_Pennsylvania" title="National Register of Historic Places listings in Forest County, Pennsylvania">Forest</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Franklin_County,_Pennsylvania" title="National Register of Historic Places listings in Franklin County, Pennsylvania">Franklin</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Fulton_County,_Pennsylvania" title="National Register of Historic Places listings in Fulton County, Pennsylvania">Fulton</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Greene_County,_Pennsylvania" title="National Register of Historic Places listings in Greene County, Pennsylvania">Greene</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Huntingdon_County,_Pennsylvania" title="National Register of Historic Places listings in Huntingdon County, Pennsylvania">Huntingdon</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Indiana_County,_Pennsylvania" title="National Register of Historic Places listings in Indiana County, Pennsylvania">Indiana</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Jefferson_County,_Pennsylvania" title="National Register of Historic Places listings in Jefferson County, Pennsylvania">Jefferson</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Juniata_County,_Pennsylvania" title="National Register of Historic Places listings in Juniata County, Pennsylvania">Juniata</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Lackawanna_County,_Pennsylvania" title="National Register of Historic Places listings in Lackawanna County, Pennsylvania">Lackawanna</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Lancaster_County,_Pennsylvania" title="National Register of Historic Places listings in Lancaster County, Pennsylvania">Lancaster</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Lawrence_County,_Pennsylvania" title="National Register of Historic Places listings in Lawrence County, Pennsylvania">Lawrence</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Lebanon_County,_Pennsylvania" title="National Register of Historic Places listings in Lebanon County, Pennsylvania">Lebanon</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Lehigh_County,_Pennsylvania" title="National Register of Historic Places listings in Lehigh County, Pennsylvania">Lehigh</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Luzerne_County,_Pennsylvania" title="National Register of Historic Places listings in Luzerne County, Pennsylvania">Luzerne</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Lycoming_County,_Pennsylvania" title="National Register of Historic Places listings in Lycoming County, Pennsylvania">Lycoming</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_McKean_County,_Pennsylvania" title="National Register of Historic Places listings in McKean County, Pennsylvania">McKean</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Mercer_County,_Pennsylvania" title="National Register of Historic Places listings in Mercer County, Pennsylvania">Mercer</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Mifflin_County,_Pennsylvania" title="National Register of Historic Places listings in Mifflin County, Pennsylvania">Mifflin</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Monroe_County,_Pennsylvania" title="National Register of Historic Places listings in Monroe County, Pennsylvania">Monroe</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Montgomery_County,_Pennsylvania" title="National Register of Historic Places listings in Montgomery County, Pennsylvania">Montgomery</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Montour_County,_Pennsylvania" title="National Register of Historic Places listings in Montour County, Pennsylvania">Montour</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Northampton_County,_Pennsylvania" title="National Register of Historic Places listings in Northampton County, Pennsylvania">Northampton</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Northumberland_County,_Pennsylvania" title="National Register of Historic Places listings in Northumberland County, Pennsylvania">Northumberland</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Perry_County,_Pennsylvania" title="National Register of Historic Places listings in Perry County, Pennsylvania">Perry</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Philadelphia" title="National Register of Historic Places listings in Philadelphia">Philadelphia</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Pike_County,_Pennsylvania" title="National Register of Historic Places listings in Pike County, Pennsylvania">Pike</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Potter_County,_Pennsylvania" title="National Register of Historic Places listings in Potter County, Pennsylvania">Potter</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Schuylkill_County,_Pennsylvania" title="National Register of Historic Places listings in Schuylkill County, Pennsylvania">Schuylkill</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Snyder_County,_Pennsylvania" title="National Register of Historic Places listings in Snyder County, Pennsylvania">Snyder</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Somerset_County,_Pennsylvania" title="National Register of Historic Places listings in Somerset County, Pennsylvania">Somerset</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Sullivan_County,_Pennsylvania" title="National Register of Historic Places listings in Sullivan County, Pennsylvania">Sullivan</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Susquehanna_County,_Pennsylvania" title="National Register of Historic Places listings in Susquehanna County, Pennsylvania">Susquehanna</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Tioga_County,_Pennsylvania" title="National Register of Historic Places listings in Tioga County, Pennsylvania">Tioga</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Union_County,_Pennsylvania" title="National Register of Historic Places listings in Union County, Pennsylvania">Union</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Venango_County,_Pennsylvania" title="National Register of Historic Places listings in Venango County, Pennsylvania">Venango</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Warren_County,_Pennsylvania" title="National Register of Historic Places listings in Warren County, Pennsylvania">Warren</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Washington_County,_Pennsylvania" title="National Register of Historic Places listings in Washington County, Pennsylvania">Washington</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Wayne_County,_Pennsylvania" title="National Register of Historic Places listings in Wayne County, Pennsylvania">Wayne</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Westmoreland_County,_Pennsylvania" title="National Register of Historic Places listings in Westmoreland County, Pennsylvania">Westmoreland</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Wyoming_County,_Pennsylvania" title="National Register of Historic Places listings in Wyoming County, Pennsylvania">Wyoming</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_York_County,_Pennsylvania" title="National Register of Historic Places listings in York County, Pennsylvania">York</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#A8EDEF;color:black">Lists by city</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Pittsburgh,_Pennsylvania" title="National Register of Historic Places listings in Pittsburgh, Pennsylvania">Pittsburgh</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Lancaster,_Pennsylvania" title="National Register of Historic Places listings in Lancaster, Pennsylvania">Lancaster</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Philadelphia" title="National Register of Historic Places listings in Philadelphia">Philadelphia</a> <ul><li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Center_City,_Philadelphia" title="National Register of Historic Places listings in Center City, Philadelphia">Center City</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_North_Philadelphia" title="National Register of Historic Places listings in North Philadelphia">North</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Northeast_Philadelphia" title="National Register of Historic Places listings in Northeast Philadelphia">Northeast</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Northwest_Philadelphia" title="National Register of Historic Places listings in Northwest Philadelphia">Northwest</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_South_Philadelphia" title="National Register of Historic Places listings in South Philadelphia">South</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_Southwest_Philadelphia" title="National Register of Historic Places listings in Southwest Philadelphia">Southwest</a></li> <li><a href="/wiki/National_Register_of_Historic_Places_listings_in_West_Philadelphia" title="National Register of Historic Places listings in West Philadelphia">West</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#A8EDEF;color:black">Other lists</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_European_archaeological_sites_on_the_National_Register_of_Historic_Places_in_Pennsylvania" title="List of European archaeological sites on the National Register of Historic Places in Pennsylvania">European archaeological sites</a></li> <li><a href="/wiki/List_of_Native_American_archaeological_sites_on_the_National_Register_of_Historic_Places_in_Pennsylvania" title="List of Native American archaeological sites on the National Register of Historic Places in Pennsylvania">Native American archaeological sites</a></li> <li><a href="/wiki/List_of_bridges_on_the_National_Register_of_Historic_Places_in_Pennsylvania" title="List of bridges on the National Register of Historic Places in Pennsylvania">Bridges</a> (<a href="/wiki/List_of_covered_bridges_on_the_National_Register_of_Historic_Places_in_Pennsylvania" title="List of covered bridges on the National Register of Historic Places in Pennsylvania">covered</a>)</li> <li><a href="/wiki/List_of_National_Historic_Landmarks_in_Pennsylvania" title="List of National Historic Landmarks in Pennsylvania">National Historic Landmarks</a> (<a href="/wiki/List_of_National_Historic_Landmarks_in_Philadelphia" title="List of National Historic Landmarks in Philadelphia">Philadelphia</a>)</li></ul> </div></td></tr><tr><td class="navbox-abovebelow hlist" colspan="3" style="background-color:#A8EDEF;color:black"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:National_Register_of_Historic_Places_in_Pennsylvania" title="Category:National Register of Historic Places in Pennsylvania">Category</a></li> <li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Symbol_portal_class.svg" class="mw-file-description" title="Portal"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/16px-Symbol_portal_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/23px-Symbol_portal_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/31px-Symbol_portal_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a></span> <a href="/wiki/Portal:National_Register_of_Historic_Places" title="Portal:National Register of Historic Places">NRHP portal</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&oldid=1245683531">https://en.wikipedia.org/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&oldid=1245683531</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:1854_establishments_in_Pennsylvania" title="Category:1854 establishments in Pennsylvania">1854 establishments in Pennsylvania</a></li><li><a href="/wiki/Category:Altoona,_Pennsylvania" title="Category:Altoona, Pennsylvania">Altoona, Pennsylvania</a></li><li><a href="/wiki/Category:Historic_Civil_Engineering_Landmarks" title="Category:Historic Civil Engineering Landmarks">Historic Civil Engineering Landmarks</a></li><li><a href="/wiki/Category:Museums_in_Blair_County,_Pennsylvania" title="Category:Museums in Blair County, Pennsylvania">Museums in Blair County, Pennsylvania</a></li><li><a href="/wiki/Category:National_Historic_Landmarks_in_Pennsylvania" title="Category:National Historic Landmarks in Pennsylvania">National Historic Landmarks in Pennsylvania</a></li><li><a href="/wiki/Category:National_Register_of_Historic_Places_in_Blair_County,_Pennsylvania" title="Category:National Register of Historic Places in Blair County, Pennsylvania">National Register of Historic Places in Blair County, Pennsylvania</a></li><li><a href="/wiki/Category:Norfolk_Southern_Railway" title="Category:Norfolk Southern Railway">Norfolk Southern Railway</a></li><li><a href="/wiki/Category:Pennsylvania_Railroad" title="Category:Pennsylvania Railroad">Pennsylvania Railroad</a></li><li><a href="/wiki/Category:Rail_infrastructure_in_Pennsylvania" title="Category:Rail infrastructure in Pennsylvania">Rail infrastructure in Pennsylvania</a></li><li><a href="/wiki/Category:Rail_infrastructure_on_the_National_Register_of_Historic_Places_in_Pennsylvania" title="Category:Rail infrastructure on the National Register of Historic Places in Pennsylvania">Rail infrastructure on the National Register of Historic Places in Pennsylvania</a></li><li><a href="/wiki/Category:Railroad_museums_in_Pennsylvania" title="Category:Railroad museums in Pennsylvania">Railroad museums in Pennsylvania</a></li><li><a href="/wiki/Category:Railroad-related_National_Historic_Landmarks" title="Category:Railroad-related National Historic Landmarks">Railroad-related National Historic Landmarks</a></li><li><a href="/wiki/Category:Railway_lines_opened_in_1854" title="Category:Railway lines opened in 1854">Railway lines opened in 1854</a></li><li><a href="/wiki/Category:Tourist_attractions_in_Blair_County,_Pennsylvania" title="Category:Tourist attractions in Blair County, Pennsylvania">Tourist attractions in Blair County, Pennsylvania</a></li><li><a href="/wiki/Category:Transportation_buildings_and_structures_in_Blair_County,_Pennsylvania" title="Category:Transportation buildings and structures in Blair County, Pennsylvania">Transportation buildings and structures in Blair County, Pennsylvania</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Pages_using_gadget_WikiMiniAtlas" title="Category:Pages using gadget WikiMiniAtlas">Pages using gadget WikiMiniAtlas</a></li><li><a href="/wiki/Category:CS1_maint:_numeric_names:_authors_list" title="Category:CS1 maint: numeric names: authors list">CS1 maint: numeric names: authors list</a></li><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:Use_mdy_dates_from_June_2023" title="Category:Use mdy dates from June 2023">Use mdy dates from June 2023</a></li><li><a href="/wiki/Category:Use_American_English_from_June_2023" title="Category:Use American English from June 2023">Use American English from June 2023</a></li><li><a href="/wiki/Category:All_Wikipedia_articles_written_in_American_English" title="Category:All Wikipedia articles written in American English">All Wikipedia articles written in American English</a></li><li><a href="/wiki/Category:Featured_articles" title="Category:Featured articles">Featured articles</a></li><li><a href="/wiki/Category:Coordinates_on_Wikidata" title="Category:Coordinates on Wikidata">Coordinates on Wikidata</a></li><li><a href="/wiki/Category:Articles_containing_potentially_dated_statements_from_2008" title="Category:Articles containing potentially dated statements from 2008">Articles containing potentially dated statements from 2008</a></li><li><a href="/wiki/Category:All_articles_containing_potentially_dated_statements" title="Category:All articles containing potentially dated statements">All articles containing potentially dated statements</a></li><li><a href="/wiki/Category:Commons_category_link_is_on_Wikidata" title="Category:Commons category link is on Wikidata">Commons category link is on Wikidata</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 14 September 2024, at 14:05<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=Horseshoe_Curve_(Pennsylvania)&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-f69cdc8f6-tfkkl","wgBackendResponseTime":185,"wgPageParseReport":{"limitreport":{"cputime":"0.930","walltime":"1.177","ppvisitednodes":{"value":7785,"limit":1000000},"postexpandincludesize":{"value":161866,"limit":2097152},"templateargumentsize":{"value":11054,"limit":2097152},"expansiondepth":{"value":20,"limit":100},"expensivefunctioncount":{"value":11,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":154473,"limit":5000000},"entityaccesscount":{"value":1,"limit":400},"timingprofile":["100.00% 1031.039 1 -total"," 25.32% 261.090 2 Template:Infobox"," 23.07% 237.880 1 Template:Reflist"," 21.46% 221.299 1 Template:Infobox_NRHP"," 10.28% 105.995 6 Template:Cite_web"," 10.00% 103.063 4 Template:Navbox"," 9.54% 98.381 26 Template:Sfn"," 8.83% 90.999 1 Template:Altoona,_Pennsylvania"," 8.14% 83.897 2 Template:Short_description"," 6.36% 65.591 42 Template:Main_other"]},"scribunto":{"limitreport-timeusage":{"value":"0.555","limit":"10.000"},"limitreport-memusage":{"value":11873539,"limit":52428800},"limitreport-logs":"anchor_id_list = table#1 {\n [\"CITEREFBarry2009\"] = 1,\n [\"CITEREFBorkowski2008\"] = 1,\n [\"CITEREFBrown2015\"] = 1,\n [\"CITEREFCohen2002\"] = 1,\n [\"CITEREFCupper2004\"] = 1,\n [\"CITEREFElyWatkins1893\"] = 1,\n [\"CITEREFEngineering_Design_and_Construction2012\"] = 1,\n [\"CITEREFGreenwood1975\"] = 1,\n [\"CITEREFHowe1954\"] = 1,\n [\"CITEREFKibler2012\"] = 1,\n [\"CITEREFKibler2013\"] = 1,\n [\"CITEREFKnight1899\"] = 1,\n [\"CITEREFMichelmore1991\"] = 1,\n [\"CITEREFSeidel2008\"] = 1,\n [\"CITEREFTreese2003\"] = 1,\n [\"CITEREFUnited_States,_63rd_Congress1915\"] = 1,\n [\"CITEREFWoods2010\"] = 1,\n [\"CITEREFWrinn2009\"] = 1,\n}\ntemplate_list = table#1 {\n [\"Altoona, Pennsylvania\"] = 1,\n [\"As of\"] = 1,\n [\"Authority control\"] = 1,\n [\"Circa\"] = 2,\n [\"Cite book\"] = 8,\n [\"Cite journal\"] = 10,\n [\"Cite magazine\"] = 1,\n [\"Cite map\"] = 2,\n [\"Cite news\"] = 8,\n [\"Cite web\"] = 6,\n [\"Commons category\"] = 1,\n [\"Convert\"] = 24,\n [\"Coord\"] = 1,\n [\"Div col\"] = 1,\n [\"Div col end\"] = 1,\n [\"Featured article\"] = 1,\n [\"Infobox NRHP\"] = 1,\n [\"NHLS url\"] = 1,\n [\"National Register of Historic Places in Pennsylvania\"] = 1,\n [\"Panorama\"] = 2,\n [\"Portal\"] = 1,\n [\"Reflist\"] = 1,\n [\"Sfn\"] = 26,\n [\"Short description\"] = 1,\n [\"Staufer-Pennsy\"] = 1,\n [\"Use American English\"] = 1,\n [\"Use mdy dates\"] = 1,\n}\narticle_whitelist = table#1 {\n}\n"},"cachereport":{"origin":"mw-web.eqiad.main-5dc468848-kwxnb","timestamp":"20241122141024","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Horseshoe Curve (Pennsylvania)","url":"https:\/\/en.wikipedia.org\/wiki\/Horseshoe_Curve_(Pennsylvania)","sameAs":"http:\/\/www.wikidata.org\/entity\/Q42730","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q42730","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2004-05-11T01:17:25Z","dateModified":"2024-09-14T14:05:40Z","image":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/2\/22\/Horseshoe_Curve_aerial_photo%2C_March_2006.jpg","headline":"triple-tracked railroad curve on the Norfolk Southern Railway's Pittsburgh Line."}</script> </body> </html>