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Pont Hafren - Wicipedia

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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">Prif ddewislen</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">Prif ddewislen</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">symud i&#039;r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">cuddio</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Panel llywio </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage" class="mw-list-item"><a href="/wiki/Hafan" title="Ymweld â&#039;r Hafan [z]" accesskey="z"><span>Hafan</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wicipedia:Porth_y_Gymuned" title="Pethau i&#039;w gwneud, adnoddau a thudalennau&#039;r gymuned"><span>Porth y Gymuned</span></a></li><li id="n-cafe" class="mw-list-item"><a href="/wiki/Wicipedia:Y_Caffi"><span>Y Caffi</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Categori:Materion_cyfoes" title="Gwybodaeth yn gysylltiedig â materion cyfoes"><span>Materion cyfoes</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Arbennig:RecentChanges" title="Rhestr y newidiadau diweddar ar y wici. [r]" accesskey="r"><span>Newidiadau diweddar</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Arbennig:Random" title="Llwytho tudalen ar hap [x]" accesskey="x"><span>Erthygl ar hap</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Wicipedia:Cymorth" title="Tudalennau cymorth"><span>Cymorth</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Hafan" 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="Wicipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-cy.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="" src="/static/images/mobile/copyright/wikipedia-tagline-cy.svg" width="120" height="13" style="width: 7.5em; 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/Arbennig:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Chwilio Wicipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Chwilio</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="Chwilio Wicipedia" aria-label="Chwilio Wicipedia" autocapitalize="sentences" title="Chwilio Wicipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Arbennig:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Chwilio</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Offer personol"> <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="Gwedd"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Newidiwch ymddangosiad maint ffont, lled a lliw y dudalen" > <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="Gwedd" > <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">Gwedd</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="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&amp;utm_medium=sidebar&amp;utm_campaign=C13_cy.wikipedia.org&amp;uselang=cy" class=""><span>Rhoi</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=Arbennig:CreateAccount&amp;returnto=Pont+Hafren" title="Rydym yn argymell eich bod yn creu cyfri ac yn menwgofnodi. Fodd bynnag, dydy hyn ddim yn orfodol" class=""><span>Creu cyfrif</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=Arbennig:UserLogin&amp;returnto=Pont+Hafren" title="Fe&#039;ch anogir i fewngofnodi, er nad oes rhaid gwneud. [o]" accesskey="o" class=""><span>Mewngofnodi</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="Rhagor o opsiynau" > <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="Offer personol" > <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">Offer personol</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Dewislen defnyddiwr" > <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="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&amp;utm_medium=sidebar&amp;utm_campaign=C13_cy.wikipedia.org&amp;uselang=cy"><span>Rhoi</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Arbennig:CreateAccount&amp;returnto=Pont+Hafren" title="Rydym yn argymell eich bod yn creu cyfri ac yn menwgofnodi. Fodd bynnag, dydy hyn ddim yn orfodol"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Creu cyfrif</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Arbennig:UserLogin&amp;returnto=Pont+Hafren" title="Fe&#039;ch anogir i fewngofnodi, er nad oes rhaid gwneud. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Mewngofnodi</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"> Tudalennau ar gyfer golygyddion allgofnodedig <a href="/wiki/Cymorth:Cyflwyniad" aria-label="Dysgu mwy am olygu"><span>dysgu mwy</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/Arbennig:MyContributions" title="Rhestr golygiadau o&#039;r cyfeiriad IP hwn [y]" accesskey="y"><span>Cyfraniadau</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Arbennig:MyTalk" title="Sgwrs ynglŷn â golygiadau o&#039;r cyfeiriad IP hwn [n]" accesskey="n"><span>Sgwrs</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"><!-- CentralNotice --></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="Safle"> <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="Cynnwys" 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">Cynnwys</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">symud i&#039;r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">cuddio</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">Y dechrau</div> </a> </li> <li id="toc-Lleoliad" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Lleoliad"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Lleoliad</span> </div> </a> <ul id="toc-Lleoliad-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Adeiladau_cydrannol" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Adeiladau_cydrannol"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Adeiladau cydrannol</span> </div> </a> <button aria-controls="toc-Adeiladau_cydrannol-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>Toglo is-adran Adeiladau cydrannol</span> </button> <ul id="toc-Adeiladau_cydrannol-sublist" class="vector-toc-list"> <li id="toc-Pont_Gwy" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Pont_Gwy"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Pont Gwy</span> </div> </a> <ul id="toc-Pont_Gwy-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Traphont_Beachley" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Traphont_Beachley"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Traphont Beachley</span> </div> </a> <ul id="toc-Traphont_Beachley-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Pont_Hafren" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Pont_Hafren"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.3</span> <span>Pont Hafren</span> </div> </a> <ul id="toc-Pont_Hafren-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Traphont_Aust" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Traphont_Aust"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.4</span> <span>Traphont Aust</span> </div> </a> <ul id="toc-Traphont_Aust-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Cyfeiriadau" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Cyfeiriadau"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Cyfeiriadau</span> </div> </a> <ul id="toc-Cyfeiriadau-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="Cynnwys" 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="Toglo&#039;r tabl cynnwys" > <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">Toglo&#039;r tabl cynnwys</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">Pont Hafren</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="Ewch i erthygl mewn iaith arall. Ar gael mewn 23 iaith" > <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-23" 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">23 iaith</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/%D8%AC%D8%B3%D8%B1_%D8%B3%D9%8A%D9%81%D8%B1%D9%86" title="جسر سيفرن - Arabeg" lang="ar" hreflang="ar" data-title="جسر سيفرن" data-language-autonym="العربية" data-language-local-name="Arabeg" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D9%83%D9%88%D8%A8%D8%B1%D9%89_%D8%B3%D9%8A%D9%81%D9%8A%D8%B1%D9%86" title="كوبرى سيفيرن - Arabeg yr Aifft" lang="arz" hreflang="arz" data-title="كوبرى سيفيرن" data-language-autonym="مصرى" data-language-local-name="Arabeg yr Aifft" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B8%E0%A7%87%E0%A6%AD%E0%A6%BE%E0%A6%B0%E0%A7%8D%E0%A6%A8_%E0%A6%B8%E0%A7%87%E0%A6%A4%E0%A7%81" title="সেভার্ন সেতু - Bengaleg" lang="bn" hreflang="bn" data-title="সেভার্ন সেতু" data-language-autonym="বাংলা" data-language-local-name="Bengaleg" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Severn_Bridge" title="Severn Bridge - Tsieceg" lang="cs" hreflang="cs" data-title="Severn Bridge" data-language-autonym="Čeština" data-language-local-name="Tsieceg" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Severnbroen" title="Severnbroen - Daneg" lang="da" hreflang="da" data-title="Severnbroen" data-language-autonym="Dansk" data-language-local-name="Daneg" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Severn-Br%C3%BCcke" title="Severn-Brücke - Almaeneg" lang="de" hreflang="de" data-title="Severn-Brücke" data-language-autonym="Deutsch" data-language-local-name="Almaeneg" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Severn_Bridge" title="Severn Bridge - Saesneg" lang="en" hreflang="en" data-title="Severn Bridge" data-language-autonym="English" data-language-local-name="Saesneg" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Puente_del_Severn" title="Puente del Severn - Sbaeneg" lang="es" hreflang="es" data-title="Puente del Severn" data-language-autonym="Español" data-language-local-name="Sbaeneg" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Severn_zubia" title="Severn zubia - Basgeg" lang="eu" hreflang="eu" data-title="Severn zubia" data-language-autonym="Euskara" data-language-local-name="Basgeg" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%BE%D9%84_%D8%B3%D9%88%D8%B1%D9%86" title="پل سورن - Perseg" lang="fa" hreflang="fa" data-title="پل سورن" data-language-autonym="فارسی" data-language-local-name="Perseg" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Pont_sur_la_Severn" title="Pont sur la Severn - Ffrangeg" lang="fr" hreflang="fr" data-title="Pont sur la Severn" data-language-autonym="Français" data-language-local-name="Ffrangeg" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%92%D7%A9%D7%A8_%D7%A1%D7%95%D7%95%D7%A8%D7%9F" title="גשר סוורן - Hebraeg" lang="he" hreflang="he" data-title="גשר סוורן" data-language-autonym="עברית" data-language-local-name="Hebraeg" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Jembatan_Severn" title="Jembatan Severn - Indoneseg" lang="id" hreflang="id" data-title="Jembatan Severn" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indoneseg" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Severn_Bridge" title="Severn Bridge - Eidaleg" lang="it" hreflang="it" data-title="Severn Bridge" data-language-autonym="Italiano" data-language-local-name="Eidaleg" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Severn_Bridge" title="Severn Bridge - Iseldireg" lang="nl" hreflang="nl" data-title="Severn Bridge" data-language-autonym="Nederlands" data-language-local-name="Iseldireg" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Severn_Bridge" title="Severn Bridge - Pwyleg" lang="pl" hreflang="pl" data-title="Severn Bridge" data-language-autonym="Polski" data-language-local-name="Pwyleg" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Ponte_do_Severn" title="Ponte do Severn - Portiwgaleg" lang="pt" hreflang="pt" data-title="Ponte do Severn" data-language-autonym="Português" data-language-local-name="Portiwgaleg" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D0%B5%D0%B2%D0%B5%D1%80%D0%BD%D1%81%D0%BA%D0%B8%D0%B9_%D0%BC%D0%BE%D1%81%D1%82" title="Севернский мост - Rwseg" lang="ru" hreflang="ru" data-title="Севернский мост" data-language-autonym="Русский" data-language-local-name="Rwseg" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Severn_Bridge" title="Severn Bridge - Slofaceg" lang="sk" hreflang="sk" data-title="Severn Bridge" data-language-autonym="Slovenčina" data-language-local-name="Slofaceg" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Most_Severn-Wye" title="Most Severn-Wye - Slofeneg" lang="sl" hreflang="sl" data-title="Most Severn-Wye" data-language-autonym="Slovenščina" data-language-local-name="Slofeneg" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Severn_K%C3%B6pr%C3%BCs%C3%BC" title="Severn Köprüsü - Tyrceg" lang="tr" hreflang="tr" data-title="Severn Köprüsü" data-language-autonym="Türkçe" data-language-local-name="Tyrceg" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E5%A1%9E%E6%96%87%E6%A1%A5" title="塞文桥 - Wu Tsieineaidd" lang="wuu" hreflang="wuu" data-title="塞文桥" data-language-autonym="吴语" data-language-local-name="Wu Tsieineaidd" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%A1%9E%E6%96%87%E6%A9%8B" title="塞文橋 - Tsieinëeg" lang="zh" hreflang="zh" data-title="塞文橋" data-language-autonym="中文" data-language-local-name="Tsieinëeg" 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/Q1850537#sitelinks-wikipedia" title="Golygu dolenni rhyngwici" class="wbc-editpage">Golygu dolenni</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="Parthau"> <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/Pont_Hafren" title="Gweld y dudalen bwnc [c]" accesskey="c"><span>Erthygl</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Sgwrs:Pont_Hafren" rel="discussion" title="Sgwrsio am y dudalen [t]" accesskey="t"><span>Sgwrs</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="Newid amrywiad iaith" > <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">Cymraeg</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="Golygon"> <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/Pont_Hafren"><span>Darllen</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Pont_Hafren&amp;veaction=edit" title="Golygu&#039;r dudalen hon [v]" accesskey="v"><span>Golygu</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Pont_Hafren&amp;action=edit" title="Golygu cod ffynhonnell y dudalen hon [e]" accesskey="e"><span>Golygu cod</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Pont_Hafren&amp;action=history" title="Fersiynau cynt o&#039;r dudalen hon. [h]" accesskey="h"><span>Gweld hanes</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Offer tudalen"> <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="Blwch offer" > <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">Blwch offer</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">Blwch offer</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">symud i&#039;r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">cuddio</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Rhagor o opsiynau" > <div class="vector-menu-heading"> Gweithredoedd </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/Pont_Hafren"><span>Darllen</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Pont_Hafren&amp;veaction=edit" title="Golygu&#039;r dudalen hon [v]" accesskey="v"><span>Golygu</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Pont_Hafren&amp;action=edit" title="Golygu cod ffynhonnell y dudalen hon [e]" accesskey="e"><span>Golygu cod</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Pont_Hafren&amp;action=history"><span>Gweld hanes</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Cyffredinol </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Arbennig:WhatLinksHere/Pont_Hafren" title="Rhestr o bob tudalen sy&#039;n cysylltu â hon [j]" accesskey="j"><span>Beth sy'n cysylltu yma</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Arbennig:RecentChangesLinked/Pont_Hafren" rel="nofollow" title="Newidiadau diweddar i dudalennau sydd yn cysylltu â hon [k]" accesskey="k"><span>Newidiadau perthnasol</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Arbennig:SpecialPages" title="Rhestr o&#039;r holl dudalennau arbennig [q]" accesskey="q"><span>Tudalennau arbennig</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Pont_Hafren&amp;oldid=8527806" title="Dolen barhaol i&#039;r fersiwn hwn y dudalen hon"><span>Dolen barhaol</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Pont_Hafren&amp;action=info" title="Mwy o wybodaeth am y dudalen hon"><span>Gwybodaeth am y dudalen</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Arbennig:CiteThisPage&amp;page=Pont_Hafren&amp;id=8527806&amp;wpFormIdentifier=titleform" title="Gwybodaeth ar sut i gyfeirio at y dudalen hon"><span>Cyfeirio at y dudalen hon</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Arbennig:UrlShortener&amp;url=https%3A%2F%2Fcy.wikipedia.org%2Fwiki%2FPont_Hafren"><span>Cael URL byr</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Arbennig:QrCode&amp;url=https%3A%2F%2Fcy.wikipedia.org%2Fwiki%2FPont_Hafren"><span>Lawrlwytho cod QR</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"> Argraffu / allforio </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Arbennig:Book&amp;bookcmd=book_creator&amp;referer=Pont+Hafren"><span>Llunio llyfr</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Arbennig:DownloadAsPdf&amp;page=Pont_Hafren&amp;action=show-download-screen"><span>Lawrlwytho fel PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Pont_Hafren&amp;printable=yes" title="Cynhyrchwch fersiwn o&#039;r dudalen yn barod at ei hargraffu [p]" accesskey="p"><span>Fersiwn argraffu</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"> Mewn prosiectau eraill </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:Severn_Bridge" hreflang="en"><span>Comin Wikimedia</span></a></li><li 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data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Gwedd</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">symud i&#039;r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">cuddio</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> <div id="siteSub" class="noprint">Oddi ar Wicipedia</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="cy" dir="ltr"><table class="infobox" style="width:22em"><caption>Pont Hafren</caption><tbody><tr><td colspan="2" style="text-align:center"><span typeof="mw:File"><a href="/wiki/Delwedd:Severn_Bridge_near_to_Beachley-cropped.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Severn_Bridge_near_to_Beachley-cropped.jpg/280px-Severn_Bridge_near_to_Beachley-cropped.jpg" decoding="async" width="280" height="230" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Severn_Bridge_near_to_Beachley-cropped.jpg/420px-Severn_Bridge_near_to_Beachley-cropped.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/c/c6/Severn_Bridge_near_to_Beachley-cropped.jpg 2x" data-file-width="472" data-file-height="387" /></a></span></td></tr><tr><th scope="row">Math</th><td><a href="/wiki/Pont_grog" title="Pont grog">pont grog</a>, pont ffordd, <a href="/wiki/Pont" title="Pont">pont</a>&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1850537?uselang=cy#P31" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><td colspan="2" style="text-align:center"><div class="center"></div></td></tr><tr><th scope="row">Agoriad&#160;swyddogol</th><td>8 Medi 1966&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1850537?uselang=cy#P1619" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Sefydlwyd</th><td><div class="plainlist"><ul style=""><li style="">8 Medi 1966&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1850537?uselang=cy#P571" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></li></ul></div></td></tr><tr><th colspan="2" style="text-align:center;background:#ddf;">Daearyddiaeth</th></tr><tr><th scope="row">Lleoliad</th><td><a href="/wiki/Afon_Hafren" title="Afon Hafren">Afon Hafren</a>&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1850537?uselang=cy#P276" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Sir</th><td><a href="/wiki/De_Swydd_Gaerloyw" title="De Swydd Gaerloyw">De Swydd Gaerloyw</a>, <a href="/wiki/Ardal_Fforest_y_Ddena" title="Ardal Fforest y Ddena">Ardal Fforest y Ddena</a>&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1850537?uselang=cy#P131" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Gwlad</th><td><span typeof="mw:File"><a href="/wiki/Delwedd:Flag_of_Wales.svg" class="mw-file-description" title="Baner Cymru"><img alt="Baner Cymru" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Flag_of_Wales.svg/22px-Flag_of_Wales.svg.png" decoding="async" width="22" height="13" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Flag_of_Wales.svg/33px-Flag_of_Wales.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Flag_of_Wales.svg/44px-Flag_of_Wales.svg.png 2x" data-file-width="800" data-file-height="480" /></a></span>&#160;<a href="/wiki/Cymru" title="Cymru">Cymru</a> <br /><span typeof="mw:File"><a href="/wiki/Delwedd:Flag_of_England.svg" class="mw-file-description" title="Baner Lloegr"><img alt="Baner Lloegr" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/Flag_of_England.svg/22px-Flag_of_England.svg.png" decoding="async" width="22" height="13" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/Flag_of_England.svg/33px-Flag_of_England.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/be/Flag_of_England.svg/44px-Flag_of_England.svg.png 2x" data-file-width="800" data-file-height="480" /></a></span>&#160;<a href="/wiki/Lloegr" title="Lloegr">Lloegr</a></td></tr><tr><th scope="row">Cyfesurynnau</th><td>51.6099°N 2.64026°W&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1850537?uselang=cy#P625" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Cod OS</th><td>ST5590090230&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1850537?uselang=cy#P613" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Hyd</th><td>1,600 metr&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1850537?uselang=cy#P2043" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><td colspan="2" style="text-align:center"><a class="mw-kartographer-map notheme mw-kartographer-container center" style="width: 280px; height: 250px;" data-mw-kartographer="mapframe" data-style="osm-intl" data-width="280" data-height="250" data-zoom="8" data-lat="51.6099" data-lon="-2.64026" data-overlays="[&quot;_2869045f3e2e0b89f1d139bc7c1b922058589537&quot;]" href="/wiki/Arbennig:Map/8/51.6099/-2.64026/cy"><img src="https://maps.wikimedia.org/img/osm-intl,8,51.6099,-2.64026,280x250.png?lang=cy&amp;domain=cy.wikipedia.org&amp;title=Pont_Hafren&amp;revid=8527806&amp;groups=_2869045f3e2e0b89f1d139bc7c1b922058589537" width="280" height="250" decoding="async" srcset="https://maps.wikimedia.org/img/osm-intl,8,51.6099,-2.64026,280x250@2x.png?lang=cy&amp;domain=cy.wikipedia.org&amp;title=Pont_Hafren&amp;revid=8527806&amp;groups=_2869045f3e2e0b89f1d139bc7c1b922058589537 2x" alt="Map" /></a></td></tr><tr><th scope="row">Statws&#160;treftadaeth</th><td>adeilad rhestredig Gradd I&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1850537?uselang=cy#P1435" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th colspan="2" style="text-align:center;background:#ddf;">Manylion</th></tr><tr><th scope="row">Deunydd</th><td><a href="/wiki/Dur" title="Dur">dur</a>&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1850537?uselang=cy#P186" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><td colspan="2" style="text-align:center"><div style="text-align: center;"><span typeof="mw:File"><span title="Tudalen Comin"><img alt="Tudalen Comin" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span> <a href="https://commons.wikimedia.org/wiki/Category:Severn_Bridge" class="extiw" title="commons:Category:Severn Bridge">Ffeiliau perthnasol ar Comin</a></div></td></tr><tr><td colspan="2" style="text-align:center"><div class="metadata" style="text-align: right;">&#91;<a href="https://www.wikidata.org/wiki/Q1850537" class="extiw" title="d:Q1850537">golygwch ar Wicidata</a>]</div></td></tr></tbody></table> <p><a href="/wiki/Pont_grog" title="Pont grog">Pont grog</a> yw <b>Pont Hafren</b> sy'n rhychwantu <a href="/wiki/Afon_Hafren" title="Afon Hafren">Afon Hafren</a> rhwng De <a href="/wiki/Swydd_Gaerloyw" title="Swydd Gaerloyw">Swydd Gaerloyw</a> yn <a href="/wiki/Lloegr" title="Lloegr">Lloegr</a> a <a href="/wiki/Sir_Fynwy" title="Sir Fynwy">Sir Fynwy</a> yn <a href="/wiki/De_Cymru" title="De Cymru">Ne Cymru</a>. Mae hi'n cludo'r draffordd <a href="/wiki/M48" class="mw-redirect" title="M48">M48</a>. Y bont oedd y groesfan wreiddiol rhwng <a href="/wiki/Cymru" title="Cymru">Cymru</a> a Lloegr a oedd yn cludo'r draffordd <a href="/wiki/M4" class="mw-redirect" title="M4">M4</a>, cyn agor <a href="/wiki/Ail_Groesfan_Hafren" title="Ail Groesfan Hafren">Ail Groesfan Hafren</a>. Cymerwyd pum mlynedd i'w chodi gan gostio £8 miliwn. Agorwyd y bont ar 8 Medi 1966 gan y Frenhines <a href="/wiki/Elisabeth_II,_brenhines_y_Deyrnas_Unedig" title="Elisabeth II, brenhines y Deyrnas Unedig">Elisabeth II</a> a gyfeiriodd ati fel dechrau cyfnod economaidd newydd i dde Cymru. Rhoddwyd statws rhestredig Gradd I i'r bont ym 1998. </p><p>I ddathlu agoriad y bont, ysgrifennodd y bardd Eingl-Gymreig <a href="/wiki/Harri_Webb" title="Harri Webb">Harri Webb</a> bennill ddychanol: </p> <dl><dd><i>Two lands at last connected</i></dd> <dd><i>Across the waters wide,</i></dd> <dd><i>And all the tolls collected</i></dd> <dd><i>On the English side.</i><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">&#91;</span>1<span class="cite-bracket">&#93;</span></a></sup></dd></dl> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Lleoliad">Lleoliad</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pont_Hafren&amp;veaction=edit&amp;section=1" title="Golygu&#039;r adran: Lleoliad" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Pont_Hafren&amp;action=edit&amp;section=1" title="Edit section&#039;s source code: Lleoliad"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Serch i'r Bont Hafren gael ei defnyddio i groesi rhwng Cymru a Lloegr, mae'r bont ei hun wedi'i lleoli'n gyfan gwbl y tu mewn i ffiniau Lloegr gyda'r pen <i>Cymreig</i> wedi'i leoli uwchben Penrhyn Beachley, sydd y tu fewn i ffiniau presennol Lloegr. Arferai Penrhyn Beachley, fodd bynnag, fod y tu mewn i ffiniau Cymru yn ôl lleoliad <a href="/wiki/Clawdd_Offa" title="Clawdd Offa">Clawdd Offa</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Adeiladau_cydrannol">Adeiladau cydrannol</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pont_Hafren&amp;veaction=edit&amp;section=2" title="Golygu&#039;r adran: Adeiladau cydrannol" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Pont_Hafren&amp;action=edit&amp;section=2" title="Edit section&#039;s source code: Adeiladau cydrannol"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Mae afon Hafren yn cynnwys nifer o bontydd gwahanol, sef Pont Gwy, Traphont Beachley, Pont Hafren a Thraphont Aust. </p> <div class="mw-heading mw-heading4"><h4 id="Pont_Gwy">Pont Gwy</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pont_Hafren&amp;veaction=edit&amp;section=3" title="Golygu&#039;r adran: Pont Gwy" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Pont_Hafren&amp;action=edit&amp;section=3" title="Edit section&#039;s source code: Pont Gwy"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Pont 408 m (1,340 tr) o hyd sydd wedi'i hangori â cheblau yw Pont Gwy. Mae hi'n rhychwantu <a href="/wiki/Afon_Gwy" title="Afon Gwy">afon Gwy</a> sydd heddiw'n nodi'r union ffin rhwng Lloegr a Chymru—2.7&#160;km i'r de o <a href="/wiki/Cas-gwent" title="Cas-gwent">Gas-gwent</a>. </p> <div class="mw-heading mw-heading4"><h4 id="Traphont_Beachley">Traphont Beachley</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pont_Hafren&amp;veaction=edit&amp;section=4" title="Golygu&#039;r adran: Traphont Beachley" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Pont_Hafren&amp;action=edit&amp;section=4" title="Edit section&#039;s source code: Traphont Beachley"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Adeiledd hytrawst deuflwch gyda wyneb concrit yw Traphont Beachley sydd wedi'i gynnal gan drestlau haearn wrth iddi grosi'r penrhyn. Saif gwersyll y fyddin ar y penrhyn. </p> <div class="mw-heading mw-heading4"><h4 id="Pont_Hafren">Pont Hafren</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pont_Hafren&amp;veaction=edit&amp;section=5" title="Golygu&#039;r adran: Pont Hafren" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Pont_Hafren&amp;action=edit&amp;section=5" title="Edit section&#039;s source code: Pont Hafren"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Lleolir Pont Hafren yn agos i leoliad yr hen Fferi Aust. Pont grog 1,597 m (5,240 tr) o hyd yw hi, sydd â dec wedi'i gynnal gan ddau brif gebl sy'n hongian rhwng dau dŵr haearn. Hyd y bwlch rhwng y ddau dŵr yw 988 m (3,240 tr). Mae'r tyrau'n wag ac yn codi 136 m (445 tr) uwchben lefel y môr. </p> <div class="mw-heading mw-heading4"><h4 id="Traphont_Aust">Traphont Aust</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pont_Hafren&amp;veaction=edit&amp;section=6" title="Golygu&#039;r adran: Traphont Aust" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Pont_Hafren&amp;action=edit&amp;section=6" title="Edit section&#039;s source code: Traphont Aust"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Adeiledd hytrawst deuflwch gyda dec concrit yw Traphont Aust ac y mae'n cario'r ffordd i angorfa gyntaf Pont Hafren. </p> <figure class="mw-halign-center" typeof="mw:File/Thumb"><a href="/wiki/Delwedd:Suspension_bridge-panoramic.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/a/ad/Suspension_bridge-panoramic.jpg" decoding="async" width="696" height="163" class="mw-file-element" data-file-width="696" data-file-height="163" /></a><figcaption>Pont Hafren</figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="Cyfeiriadau">Cyfeiriadau</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pont_Hafren&amp;veaction=edit&amp;section=7" title="Golygu&#039;r adran: Cyfeiriadau" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Pont_Hafren&amp;action=edit&amp;section=7" title="Edit section&#039;s source code: Cyfeiriadau"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist" style="list-style-type: decimal;"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text">&#160;<a rel="nofollow" class="external text" href="http://www.publications.parliament.uk/pa/ld199899/ldhansrd/vo990217/text/90217-05.htm">Lords Hansard Text</a>.&#32;<i>UK Parliament Publications &amp; Records</i>&#32;(17 Chwefror 1999).&#32;Adalwyd ar 6 Mehefin 2014.</span> </li> </ol></div></div> <!-- NewPP limit report Parsed by mw‐api‐int.codfw.main‐648bd44df8‐wwkd4 Cached time: 20241116205252 Cache expiry: 2592000 Reduced expiry: false Complications: [show‐toc] CPU time usage: 0.312 seconds Real time usage: 0.454 seconds Preprocessor visited node count: 2920/1000000 Post‐expand include size: 24410/2097152 bytes Template argument size: 7180/2097152 bytes Highest expansion depth: 12/100 Expensive parser function count: 1/500 Unstrip recursion depth: 0/20 Unstrip post‐expand size: 1468/5000000 bytes Lua time usage: 0.180/10.000 seconds Lua memory usage: 4065276/52428800 bytes Number of Wikibase entities loaded: 2/400 --> <!-- Transclusion expansion time report (%,ms,calls,template) 100.00% 389.572 1 -total 97.26% 378.913 1 Nodyn:Gwybodlen_lle 92.84% 361.674 1 Nodyn:Infobox 47.57% 185.331 74 Nodyn:If_first_display_both 11.97% 46.629 1 Nodyn:Dylunio_map 3.20% 12.472 1 Nodyn:Wikidata 2.49% 9.705 2 Nodyn:Banergwlad 2.11% 8.220 1 Nodyn:Cyfeiriadau 2.02% 7.854 1 Nodyn:Icon 1.87% 7.288 3 Nodyn:Main_other --> <!-- Saved in parser cache with key cywiki:pcache:idhash:26752-0!canonical and timestamp 20241116205252 and revision id 8527806. 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