{"id":6200,"date":"2025-06-25T08:46:44","date_gmt":"2025-06-25T08:46:44","guid":{"rendered":"https:\/\/cita.co.uk\/news\/?p=6200"},"modified":"2025-06-25T08:46:44","modified_gmt":"2025-06-25T08:46:44","slug":"engineers-pull-off-220m-hs2-viaduct-slide-in-3-days","status":"publish","type":"post","link":"https:\/\/cita.co.uk\/news\/engineers-pull-off-220m-hs2-viaduct-slide-in-3-days\/","title":{"rendered":"Engineers pull-off 220m HS2 viaduct slide in 3 days"},"content":{"rendered":"<p data-start=\"209\" data-end=\"380\">HS2 engineers have completed a three-day operation to slide the 1,300-tonne deck of the Lower Thorpe viaduct into position near Thorpe Mandeville in West Northamptonshire.<\/p>\n<p data-start=\"382\" data-end=\"520\">The 220m-long structure is the last of five \u201cdouble composite\u201d viaducts on the central section of HS2 to be installed using the technique.<\/p>\n<p data-start=\"522\" data-end=\"729\">Delivered by main works contractor EKFB \u2013 Eiffage, Kier, Ferrovial and BAM \u2013 the steel and concrete deck was slid into place over three days using PTFE-covered pads to reduce friction.<\/p>\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/iEV1ARbDKZc?si=MFKieQN3GX1OHrYp\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p data-start=\"731\" data-end=\"847\">Once in place, it will be lowered 60cm onto permanent bearings before work begins on the concrete deck and parapets.<\/p>\n<p data-start=\"731\" data-end=\"847\">\n<div class=\"ad-mpu ad-mpu-inline\">\n<div class=\"sleeve\"><a data-ad-id=\"492636\" href=\"http:\/\/www.constructionenquirer.com\/wp-content\/themes\/constructionenquirer\/adclick.php?url=https%3A%2F%2Fwinchmorebrickwork.co.uk%2Fabout-us%2F%3Futm_source%3Dconstruction-enquirer%26utm_medium%3Dbanner%26utm_campaign%3Dconstructionenq-ads\" target=\"_blank\" onclick=\"track_ad_click(this);\"><img decoding=\"async\" src=\"https:\/\/www.constructionenquirer.com\/wp-content\/uploads\/WINChMORE_JOBS_MPU.gif\"\/><\/a><\/div>\n<\/div>\n<p data-start=\"849\" data-end=\"1002\">The weathering steel viaduct spans a floodplain and Banbury Lane and is designed to blend with the surrounding countryside while managing local drainage.<\/p>\n<p data-start=\"1004\" data-end=\"1228\">EKFB technical director Janice McKenna said the \u201cdouble composite\u201d system \u2013 using hollow steel sections with reinforced concrete slabs \u2013 helped slash embodied carbon by up to 59% compared to traditional solid concrete beams.<\/p>\n<p data-start=\"1004\" data-end=\"1228\">\n<div class=\"ad-mpu ad-mpu-inline\">\n<div class=\"sleeve\"><a data-ad-id=\"494661\" href=\"http:\/\/www.constructionenquirer.com\/wp-content\/themes\/constructionenquirer\/adclick.php?url=https%3A%2F%2Fbrand-accesssolutions.com%2F%3Futm_source%3Dconstruction-enquirer%26utm_medium%3Dbanner%26utm_campaign%3Dconstructionenq-ads\" target=\"_blank\" onclick=\"track_ad_click(this);\"><img decoding=\"async\" src=\"https:\/\/www.constructionenquirer.com\/wp-content\/uploads\/brand slower ezgif.com-animated-gif-maker.gif\"\/><\/a><\/div>\n<\/div>\n<p data-start=\"1230\" data-end=\"1437\">HS2 project manager Sam Arrowsmith said the three-day slide was the culmination of four years of work, with final touches now underway across the five viaducts between the Chilterns and South Warwickshire.<\/p>\n<p data-start=\"1439\" data-end=\"1606\">Westbury is the most advanced, where cantilever formwork travellers are being used to build concrete decks span-by-span without cranes, boosting safety and efficiency.<\/p>\n<p data-start=\"1439\" data-end=\"1606\">\n<div class=\"ad-mpu ad-mpu-inline\">\n<div class=\"sleeve\"><a data-ad-id=\"493441\" href=\"http:\/\/www.constructionenquirer.com\/wp-content\/themes\/constructionenquirer\/adclick.php?url=https%3A%2F%2Fwww.dsmcls.co.uk%2F%3Futm_source%3Dconstruction-enquirer%26utm_medium%3Dbanner%26utm_campaign%3Dconstructionenq-ads\" target=\"_blank\" onclick=\"track_ad_click(this);\"><img decoding=\"async\" src=\"https:\/\/www.constructionenquirer.com\/wp-content\/uploads\/DSM LOOPER.GIF\"\/><\/a><\/div>\n<\/div>\n<p data-start=\"1439\" data-end=\"1606\">\n<div class=\"ad-mpu ad-mpu-inline\">\n<div class=\"sleeve\"><a data-ad-id=\"494158\" href=\"http:\/\/www.constructionenquirer.com\/wp-content\/themes\/constructionenquirer\/adclick.php?url=https%3A%2F%2Fwww.agd-equipment.co.uk%2F%3Futm_source%3Dconstruction-enquirer%26utm_medium%3Dbanner%26utm_campaign%3Dconstructionenq-ads\" target=\"_blank\" onclick=\"track_ad_click(this);\"><img decoding=\"async\" src=\"https:\/\/www.constructionenquirer.com\/wp-content\/uploads\/AGD002_AGD-MPU_Pilers_300x250_2.gif\"\/><\/a><\/div>\n<\/div>\n<p data-start=\"1439\" data-end=\"1606\">\n<p>from Construction Enquirer https:\/\/ift.tt\/CvBybfY<\/p>\n","protected":false},"excerpt":{"rendered":"<p>HS2 engineers have completed a three-day operation to slide the 1,300-tonne deck of the Lower Thorpe viaduct into position near Thorpe Mandeville in West Northamptonshire. The 220m-long structure is the last of five \u201cdouble composite\u201d viaducts on the central section of HS2 to be installed using the technique. Delivered by main works contractor EKFB \u2013 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":149,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[9],"class_list":["post-6200","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-construction-enquirer"],"_links":{"self":[{"href":"https:\/\/cita.co.uk\/news\/wp-json\/wp\/v2\/posts\/6200","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cita.co.uk\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cita.co.uk\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cita.co.uk\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cita.co.uk\/news\/wp-json\/wp\/v2\/comments?post=6200"}],"version-history":[{"count":1,"href":"https:\/\/cita.co.uk\/news\/wp-json\/wp\/v2\/posts\/6200\/revisions"}],"predecessor-version":[{"id":6201,"href":"https:\/\/cita.co.uk\/news\/wp-json\/wp\/v2\/posts\/6200\/revisions\/6201"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cita.co.uk\/news\/wp-json\/wp\/v2\/media\/155"}],"wp:attachment":[{"href":"https:\/\/cita.co.uk\/news\/wp-json\/wp\/v2\/media?parent=6200"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cita.co.uk\/news\/wp-json\/wp\/v2\/categories?post=6200"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cita.co.uk\/news\/wp-json\/wp\/v2\/tags?post=6200"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}