Major M4 and other road closures in Wales today, Saturday, May 23 | Wales Online<\/title><meta name=\"description\" content=\"Traffic is possible due to the road closures and drivers are advised to plan their routes accordingly and allow extra time for journeys where necessary\"\/><meta name=\"author\" content=\"Taite Johnson\"\/><meta name=\"robots\" content=\"noarchive, max-image-preview:large\"\/><meta name=\"Googlebot-News\" content=\"noarchive\"\/><meta name=\"referrer\" content=\"unsafe-URL\"\/><meta name=\"keywords\" content=\"M4, A470, Traffic and Travel\"\/><meta name=\"news_keywords\" content=\"M4, A470, Traffic and Travel\"\/><link rel=\"canonical\" href=\"https:\/\/www.walesonline.co.uk\/news\/wales-news\/major-m4-road-closures-wales-33999616\"\/><meta property=\"og:title\" content=\"Major M4 and other road closures in Wales today, Saturday, May 23\"\/><meta property=\"og:description\" content=\"Traffic is possible due to the road closures and drivers are advised to plan their routes accordingly and allow extra time for journeys where necessary\"\/><meta property=\"og:url\" content=\"https:\/\/www.walesonline.co.uk\/news\/wales-news\/major-m4-road-closures-wales-33999616\"\/><meta property=\"og:site_name\" content=\"Wales Online\"\/><meta property=\"og:locale\" content=\"en_GB\"\/><meta property=\"og:image\" content=\"https:\/\/i2-prod.walesonline.co.uk\/article33999647.ece\/ALTERNATES\/s1200d\/0_Bank-holiday-getaway.jpg\"\/><meta property=\"og:type\" content=\"article\"\/><meta property=\"article:published_time\" content=\"2026-05-23T07:50:21Z\"\/><meta property=\"article:modified_time\" content=\"2026-05-23T07:50:21Z\"\/><meta property=\"article:author\" content=\"https:\/\/www.walesonline.co.uk\/authors\/taite-johnson\/\"\/><meta property=\"article:section\" content=\"Latest Wales News\"\/><meta property=\"article:tag\" content=\"M4\"\/><meta property=\"article:tag\" content=\"A470\"\/><meta property=\"article:tag\" content=\"Traffic and Travel\"\/><meta name=\"twitter:card\" content=\"summary_large_image\"\/><meta name=\"twitter:site\" content=\"@WalesOnline\"\/><meta name=\"twitter:creator\" content=\"@WalesOnline\"\/><meta name=\"twitter:title\" content=\"Major M4 and other road closures in Wales today, Saturday, May 23\"\/><meta name=\"twitter:description\" content=\"Traffic is possible due to the road closures and drivers are advised to plan their routes accordingly and allow extra time for journeys where necessary\"\/><meta name=\"twitter:image\" content=\"https:\/\/i2-prod.walesonline.co.uk\/article33999647.ece\/ALTERNATES\/s1200\/0_Bank-holiday-getaway.jpg\"\/><link rel=\"shortcut icon\" href=\"https:\/\/www.walesonline.co.uk\/nav-web-static\/main-703c5efa6ab4b5ce08606b33ed23ef9d426ec5cb\/public\/assets\/walesonline\/favicon.ico\"\/><link rel=\"stylesheet\" href=\"https:\/\/www.walesonline.co.uk\/nav-web-static\/main-703c5efa6ab4b5ce08606b33ed23ef9d426ec5cb\/public\/assets\/walesonline\/tokens\/s-v2.css\" media=\"screen and (max-width: 727px)\"\/><link rel=\"stylesheet\" href=\"https:\/\/www.walesonline.co.uk\/nav-web-static\/main-703c5efa6ab4b5ce08606b33ed23ef9d426ec5cb\/public\/assets\/walesonline\/tokens\/m-v2.css\" media=\"screen and (min-width: 728px) and (max-width: 1023px)\"\/><link rel=\"stylesheet\" href=\"https:\/\/www.walesonline.co.uk\/nav-web-static\/main-703c5efa6ab4b5ce08606b33ed23ef9d426ec5cb\/public\/assets\/walesonline\/tokens\/l-v2.css\" media=\"screen and (min-width: 1024px) and (max-width: 1239px)\"\/><link rel=\"stylesheet\" href=\"https:\/\/www.walesonline.co.uk\/nav-web-static\/main-703c5efa6ab4b5ce08606b33ed23ef9d426ec5cb\/public\/assets\/walesonline\/tokens\/xl-v2.css\" media=\"screen and (min-width: 1240px)\"\/><link href=\"https:\/\/premium.express.co.uk\/css\/cop-walesonline.css\" rel=\"stylesheet\"\/><\/head><body class=\"__className_f16c80 \" id=\"wp_automatic_ReadabilityBody\"><main class=\"MainWrapper_main__SxbuQ\" id=\"main-content\"><\/p>\n<div class=\"NeedToKnowTemplate_wrapper__KqbPM\">\n<div class=\"NeedToKnowTemplate_inner-wrapper__WsEIl\">\n<nav class=\"Breadcrumb_breadcrumb-nav__xTgNR\"\/>\n<h2 class=\"NeedToKnowTemplate_page-label__p5uqb\">Need to know<\/h2>\n<h2 class=\"LeadText_lead-text__wd_PA __className_f16c80\" data-testid=\"leadtext\">Traffic is possible due to the road closures and drivers are advised to plan their routes accordingly and allow extra time for journeys where necessary<\/h2>\n<div class=\"ImageEmbed_image-embed__0T8WX ImageEmbed_image-lead__Ti3qQ\" data-testid=\"leadimage\" data-tmdatatrack=\"content-unit\" data-tmdatatrack-articleid=\"33999647\">\n<div class=\"ImageEmbed_image-container__2AIQm\">\n<figure class=\"Figure_figure__Uce4f\" style=\"--figure-aspect-ratio:1.5\"><img decoding=\"async\" alt=\"busy traffic\" loading=\"eager\" sizes=\"(max-width: 508px) 508px, (max-width: 615px) 615px, 1200px\" src=\"https:\/\/i2-prod.walesonline.co.uk\/article33999647.ece\/ALTERNATES\/s1200f\/0_Bank-holiday-getaway.jpg\" srcset=\"https:\/\/i2-prod.walesonline.co.uk\/article33999647.ece\/ALTERNATES\/s508\/0_Bank-holiday-getaway.jpg 508w, https:\/\/i2-prod.walesonline.co.uk\/article33999647.ece\/ALTERNATES\/s615\/0_Bank-holiday-getaway.jpg 615w, https:\/\/i2-prod.walesonline.co.uk\/article33999647.ece\/ALTERNATES\/s1200f\/0_Bank-holiday-getaway.jpg 1200w\"\/><\/figure>\n<\/div><figcaption class=\"ImageCaption_caption__j7HRu\" data-testid=\"image-caption\">\n<p aria-label=\"A section of the M4 will be closed today \" class=\"ImageCaption_caption-title__ccyQU\" data-testid=\"caption-title\">A section of the M4 will be closed today <cite aria-label=\"Image: Gareth Fuller\/PA Wire\" class=\"ImageCaption_caption-credit__wlx1W\" data-testid=\"caption-credit\">(Image: Gareth Fuller\/PA Wire)<\/cite><\/p>\n<\/figcaption><\/div>\n<h3 class=\"HeadingThree_heading-three__PBHLs __className_6cd6f9\"><strong class=\"Strong_strong__e2x35\">There are roadworks across major roads in Wales today – Saturday 23.<\/strong><\/h3>\n<ul class=\"UnorderedList_unordered-list__gzblI\" data-tmdatatrack=\"content-unit\" data-tmdatatrack-type=\"unordered-list\">\n<li class=\"LiItem_li-item__IF4xI\">M4 eastbound St Julians Viaduct has been closed since April 27 and will be closed until November 30<\/li>\n<li class=\"LiItem_li-item__IF4xI\">A470 southbound from Nantgarw to Taff’s Well will be closed for carriageway maintenance with diversions in place until June 6 between 8pm and 6am.<\/li>\n<li class=\"LiItem_li-item__IF4xI\">A40 in both directions in Crickhowell is closed until June 1 for carriageway maintenance. It will be closed between 7pm and 6am.<\/li>\n<li class=\"LiItem_li-item__IF4xI\">A40 eastbound from Monmouth Dixton roundabout to Service bridge will have contraflow in place until June, 30.<\/li>\n<li class=\"LiItem_li-item__IF4xI\">A487 will have temporary traffic lights in both directions <a aria-label=\"\" class=\"TextLink_text-link__dBSS0 TextLink_enabled__dJF3l\" href=\"https:\/\/www.walesonline.co.uk\/all-about\/aberystwyth\" rel=\"follow\" tabindex=\"0\" target=\"\">Aberystwyth<\/a> Commins Coch for improvement work between 9am and 4pm until June 23.<\/li>\n<li class=\"LiItem_li-item__IF4xI\">A40 eastbound and westbound from Abergavenny Hardwick roundabout to Abergavenny will have STOP\/GO in use until June 25.<\/li>\n<li class=\"LiItem_li-item__IF4xI\"><strong class=\"Strong_strong__e2x35\">Get daily<strong class=\"Strong_strong__e2x35\"> breaking news<\/strong> updates on your phone by joining <a aria-label=\"\" class=\"TextLink_text-link__dBSS0 TextLink_enabled__dJF3l\" href=\"https:\/\/chat.whatsapp.com\/FhCH5HyTE7c59DPUcRMUXk\" rel=\"nofollow\" tabindex=\"0\" target=\"\"><u>our WhatsApp community here<\/u><\/a>. We occasionally treat members to special offers, promotions and ads from us and our partners. See our <a aria-label=\"\" class=\"TextLink_text-link__dBSS0 TextLink_enabled__dJF3l\" href=\"https:\/\/www.reachplc.com\/site-services\/privacy-policy\" rel=\"nofollow\" tabindex=\"0\" target=\"\"><u>Privacy Notice<\/u><\/a><\/strong><\/li>\n<\/ul>\n<section data-testid=\"social-follow\" class=\"SocialFollowBar_wrapper__h4k_D SocialFollowBar_left__oJoLE false undefined\">Follow walesonline:<\/section>\n<\/div>\n<hr class=\"RHRBlock_h-line__hVhY7\"\/>\n<aside class=\"RHRBlock_right-aside-wrapper__tM2wc\">\n<p><span aria-live=\"polite\" aria-busy=\"true\"><span class=\"react-loading-skeleton\" style=\"width:100%;height:100%;--base-color:#88888810;--highlight-color:#8888880d\">\u200c<\/span><br \/><\/span><\/p>\n<p><span aria-live=\"polite\" aria-busy=\"true\"><span class=\"react-loading-skeleton\" style=\"width:100%;height:100%;--base-color:#88888810;--highlight-color:#8888880d\">\u200c<\/span><br \/><\/span><\/p>\n<\/aside>\n<\/div>\n<p><\/main><dialog class=\"CIPAConsentNotice_cipa-dialog__CZfBH\" data-testid=\"cipa-dialog\"><\/p>\n<div class=\"CIPAConsentNotice_cipa-logo__zLA_w\"><img loading=\"lazy\" alt=\"reach logo\" loading=\"lazy\" width=\"150\" height=\"39\" decoding=\"async\" data-nimg=\"1\" style=\"color:transparent\" srcset=\"\/_next\/image?url=%2Fnav-web-static%2Fmain-703c5efa6ab4b5ce08606b33ed23ef9d426ec5cb%2F_next%2Fstatic%2Fmedia%2Flogo-reach.18f672b1.png&w=256&q=75 1x, \/_next\/image?url=%2Fnav-web-static%2Fmain-703c5efa6ab4b5ce08606b33ed23ef9d426ec5cb%2F_next%2Fstatic%2Fmedia%2Flogo-reach.18f672b1.png&w=384&q=75 2x\" src=\"https:\/\/www.walesonline.co.uk\/_next\/image?url=%2Fnav-web-static%2Fmain-703c5efa6ab4b5ce08606b33ed23ef9d426ec5cb%2F_next%2Fstatic%2Fmedia%2Flogo-reach.18f672b1.png&w=384&q=75\"\/><\/div>\n<p class=\"CIPAConsentNotice_cipa-info__pwt6J\">At <a href=\"https:\/\/www.reachplc.com\/about-us\/our-brands\" rel=\"noreferrer\" target=\"_blank\"> Reach and across our entities <\/a> we and our partners use information collected through cookies and other identifiers from your device to improve experience on our site, analyse how it is used and to show personalised advertising. You can opt out of the sale or sharing of your data, at any time clicking the “Do Not Sell or Share my Data” button at the bottom of the webpage. Please note that your preferences are browser specific. Use of our website and any of our services represents your acceptance of the use of <a data-testid=\"cipa-cookie-notice-link\" href=\"https:\/\/www.walesonline.co.uk\/cookie-policy\/\" rel=\"noreferrer\" target=\"_blank\"> cookies <\/a> and consent to the practices described in our <a data-testid=\"cipa-privacy-notice-link\" href=\"https:\/\/www.walesonline.co.uk\/privacy-notice\/\" rel=\"noreferrer\" target=\"_blank\">Privacy Notice<\/a> and <a data-testid=\"cipa-terms-and-conditions-notice-link\" href=\"https:\/\/www.walesonline.co.uk\/terms-conditions\/\" rel=\"noreferrer\" target=\"_blank\">Terms and Conditions<\/a>.<\/p>\n<p><button class=\"CIPAConsentNotice_cipa-accept-button__FqBb6\" data-testid=\"cipa-accept-button\">Accept<\/button><\/dialog><\/body><\/div>\n<p><a href=\"https:\/\/www.walesonline.co.uk\/news\/wales-news\/major-m4-road-closures-wales-33999616\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Major M4 and other road closures in Wales today, Saturday, May 23 | Wales Online Need to know Traffic is possible due to the road closures and drivers are advised…<\/p>\n","protected":false},"author":3,"featured_media":158885,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_lmt_disableupdate":"","_lmt_disable":"","episode_type":"","audio_file":"","podmotor_file_id":"","podmotor_episode_id":"","cover_image":"","cover_image_id":"","duration":"","filesize":"","filesize_raw":"","date_recorded":"","explicit":"","block":"","itunes_episode_number":"","itunes_title":"","itunes_season_number":"","itunes_episode_type":"","fifu_image_url":"https:\/\/i2-prod.walesonline.co.uk\/article33999647.ece\/ALTERNATES\/s1200f\/0_Bank-holiday-getaway.jpg","fifu_image_alt":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[29,33],"tags":[],"class_list":["post-158884","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recentpost","category-transport-news"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i2-prod.walesonline.co.uk\/article33999647.ece\/ALTERNATES\/s1200f\/0_Bank-holiday-getaway.jpg","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"publishpress_future_action":{"enabled":true,"date":"2026-11-23 08:40:35","action":"change-status","newStatus":"trash","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/vale50plus.org\/clone\/wp-json\/wp\/v2\/posts\/158884","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vale50plus.org\/clone\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vale50plus.org\/clone\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vale50plus.org\/clone\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/vale50plus.org\/clone\/wp-json\/wp\/v2\/comments?post=158884"}],"version-history":[{"count":0,"href":"https:\/\/vale50plus.org\/clone\/wp-json\/wp\/v2\/posts\/158884\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vale50plus.org\/clone\/wp-json\/wp\/v2\/media\/158885"}],"wp:attachment":[{"href":"https:\/\/vale50plus.org\/clone\/wp-json\/wp\/v2\/media?parent=158884"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vale50plus.org\/clone\/wp-json\/wp\/v2\/categories?post=158884"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vale50plus.org\/clone\/wp-json\/wp\/v2\/tags?post=158884"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}