{"id":75852,"date":"2026-04-27T11:20:19","date_gmt":"2026-04-27T09:20:19","guid":{"rendered":"https:\/\/www.systra.com\/denmark\/?post_type=projects&p=75852"},"modified":"2026-04-27T11:20:41","modified_gmt":"2026-04-27T09:20:41","slug":"bridge-superstructure-repair-on-thorstedvej","status":"publish","type":"projects","link":"https:\/\/www.systra.com\/denmark\/en\/project\/bridge-superstructure-repair-on-thorstedvej\/","title":{"rendered":"Bridge superstructure repair on Thorstedvej"},"content":{"rendered":"\n
\n
\n
\n \n
Technical details<\/div>\n \t
\n\t
Customer<\/div>\n\t
Danish Road Directorate<\/div>\n\t <\/div>\n
\n
Dates<\/div>\n

2024-2025<\/p>\n<\/div>\n <\/div>\n

\n
Missions<\/div>\n
Repair of major damage to the bridge superstructure instead of replacement, enabling the bridge to be reopened<\/div>\n <\/div>\n
\n
Localisation<\/div>\n
Thorstedvej, Thisted<\/div>\n <\/div>\n
\n
Activity<\/div>\n
Bridge consultancy, repair strategy, detailed design, preparation of tender documents, assistance during contract award, technical supervision, and construction management<\/div>\n <\/div>\n \n \n <\/div>\n<\/div>\n\n\n\n
\n

In February 2024, the Thorstedvej overpass over Oddesundvej in Thisted was hit by a special transport carrying a wind turbine nacelle. The bridge suffered extensive damage and at first appeared to need full replacement. Instead, SYSTRA\u2019s analysis showed that the superstructure could be repaired.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Repair instead of replacement<\/h2>\n\n\n\n
<\/div>\n\n\n\n

The bridge superstructure sustained extensive damage in the form of a semi-circular punch-through failure measuring approximately 7 x 5 metres on one side of the bridge deck. The bridge is a post-tensioned frame bridge dating from the early 1990s. SYSTRA won the tender for replacement of the bridge, as it had been assessed prior to the tender process that the bridge could not be saved.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Based on preliminary calculations, SYSTRA approached the Danish Road Directorate regarding the possibility of repairing the superstructure instead. The motivation for repairing the bridge rather than replacing it was both financial savings and a sustainability benefit.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Damage mapping using iPhone scanning<\/h2>\n\n\n\n
<\/div>\n\n\n\n

During an inspection of the damage in the summer of 2024, SYSTRA carried out a simple 3D scan using an iPhone with a LiDAR scanner. The scan provided a fast and effective way to map the extent of the damage and made it possible to determine the position of reinforcement and cables with relatively high accuracy back at the office. The resulting point cloud was then combined with the original design drawings as a basis for the analysis.<\/p>\n\n\n\n

<\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n

\n
<\/div>\n\n\n\n

Assessing the damage<\/h2>\n\n\n\n
<\/div>\n\n\n\n

The damage had exposed several of the post-tensioning cables, which also meant that the cable profile had changed and a new state of equilibrium had been established. The analysis therefore had to take into account how the post-tensioning forces had been redistributed within the bridge deck.<\/p>\n\n\n\n

<\/div>\n\n\n\n

The analysis of the damaged structure indicated that the extent of the damage was just limited enough for the stresses in the bridge deck to remain within the allowable stress level. The design also had to account for the differing material properties between the original structure and the new concrete casting, as well as differential movements caused by shrinkage and creep. This was addressed through a two-stage analysis in a FEM program.<\/p>\n\n\n\n

<\/div>\n\n\n\n

The repair scheme was then developed with a focus on minimising intervention in the undamaged concrete.<\/p>\n<\/div>

<\/div>\n\n\n\n
\"\"<\/figure>
\n
<\/div>\n\n\n\n

A sustainable and cost-effective solution<\/h2>\n\n\n\n
<\/div>\n\n\n\n

The repair of the Thorstedsvej bridge has attracted considerable attention across the industry.<\/p>\n\n\n\n

The project shows that it is not always necessary to build new structures and that, in many cases, an alternative solution can be chosen that is both more cost-effective and more sustainable.<\/p>\n\n\n\n

Julie Bernth, Head of Bridges and Structures, has given several presentations on the bridge repair, including at Betonreparationsdagen 2024.<\/p>\n\n\n\n

<\/div>\n<\/div><\/div>\n\n\n\n
<\/div>\n\n\n\n
\n
Read more about the bridge repair<\/a><\/div>\n<\/div>\n\n\n\n
<\/div>\n\n\n\n
\n
\"\"
The bridge superstructure sustained extensive damage when it was struck by the wind turbine hub.<\/figcaption><\/figure>\n\n\n\n
\"\"
It was both more cost-effective and more sustainable to repair the bridge rather than replace it.<\/figcaption><\/figure>\n\n\n\n
\"\"
By the autumn, the bridge had been completed and was ready for use again.
<\/figcaption><\/figure>\n<\/figure>\n","protected":false},"author":102,"featured_media":75844,"parent":0,"template":"","type-market":[10484],"project-market":[],"project-service":[],"project-location":[],"type-service":[],"type-solution":[],"class_list":["post-75852","projects","type-projects","status-publish","has-post-thumbnail","hentry","type-market-bridges-structures"],"acf":[],"yoast_head":"\nBridge superstructure repair on Thorstedvej - SYSTRA Danmark<\/title>\n<meta name=\"description\" content=\"Bridge superstructure repair on Thorstedvej - SYSTRA er en af verdens f\u00f8rende ingeni\u00f8r- og r\u00e5dgivningskoncerner med speciale i offentlig transport og mobilitetsl\u00f8sninger.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bridge superstructure repair on Thorstedvej\" \/>\n<meta property=\"og:description\" content=\"Bridge superstructure repair on Thorstedvej - SYSTRA er en af verdens f\u00f8rende ingeni\u00f8r- og r\u00e5dgivningskoncerner med speciale i offentlig transport og mobilitetsl\u00f8sninger.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.systra.com\/denmark\/en\/project\/bridge-superstructure-repair-on-thorstedvej\/\" \/>\n<meta property=\"og:site_name\" content=\"Denmark\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-27T09:20:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.systra.com\/denmark\/wp-content\/uploads\/sites\/26\/2026\/04\/img_2869_klippet-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"2232\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/en\\\/project\\\/bridge-superstructure-repair-on-thorstedvej\\\/\",\"url\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/en\\\/project\\\/bridge-superstructure-repair-on-thorstedvej\\\/\",\"name\":\"Bridge superstructure repair on Thorstedvej - SYSTRA Danmark\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/en\\\/project\\\/bridge-superstructure-repair-on-thorstedvej\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/en\\\/project\\\/bridge-superstructure-repair-on-thorstedvej\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/wp-content\\\/uploads\\\/sites\\\/26\\\/2026\\\/04\\\/img_2869_klippet-scaled.jpg\",\"datePublished\":\"2026-04-27T09:20:19+00:00\",\"dateModified\":\"2026-04-27T09:20:41+00:00\",\"description\":\"Bridge superstructure repair on Thorstedvej - SYSTRA er en af verdens f\u00f8rende ingeni\u00f8r- og r\u00e5dgivningskoncerner med speciale i offentlig transport og mobilitetsl\u00f8sninger.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/en\\\/project\\\/bridge-superstructure-repair-on-thorstedvej\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.systra.com\\\/denmark\\\/en\\\/project\\\/bridge-superstructure-repair-on-thorstedvej\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/en\\\/project\\\/bridge-superstructure-repair-on-thorstedvej\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/wp-content\\\/uploads\\\/sites\\\/26\\\/2026\\\/04\\\/img_2869_klippet-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/wp-content\\\/uploads\\\/sites\\\/26\\\/2026\\\/04\\\/img_2869_klippet-scaled.jpg\",\"width\":2560,\"height\":2232},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/en\\\/project\\\/bridge-superstructure-repair-on-thorstedvej\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.systra.com\\\/denmark\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Projects\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/#website\",\"url\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/\",\"name\":\"Denmark\",\"description\":\"Un site utilisant Les sites de Systra\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.systra.com\\\/denmark\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Bridge superstructure repair on Thorstedvej - SYSTRA Danmark","description":"Bridge superstructure repair on Thorstedvej - SYSTRA er en af verdens f\u00f8rende ingeni\u00f8r- og r\u00e5dgivningskoncerner med speciale i offentlig transport og mobilitetsl\u00f8sninger.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"og_locale":"en_US","og_type":"article","og_title":"Bridge superstructure repair on Thorstedvej","og_description":"Bridge superstructure repair on Thorstedvej - SYSTRA er en af verdens f\u00f8rende ingeni\u00f8r- og r\u00e5dgivningskoncerner med speciale i offentlig transport og mobilitetsl\u00f8sninger.","og_url":"https:\/\/www.systra.com\/denmark\/en\/project\/bridge-superstructure-repair-on-thorstedvej\/","og_site_name":"Denmark","article_modified_time":"2026-04-27T09:20:41+00:00","og_image":[{"width":2560,"height":2232,"url":"https:\/\/www.systra.com\/denmark\/wp-content\/uploads\/sites\/26\/2026\/04\/img_2869_klippet-scaled.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.systra.com\/denmark\/en\/project\/bridge-superstructure-repair-on-thorstedvej\/","url":"https:\/\/www.systra.com\/denmark\/en\/project\/bridge-superstructure-repair-on-thorstedvej\/","name":"Bridge superstructure repair on Thorstedvej - SYSTRA Danmark","isPartOf":{"@id":"https:\/\/www.systra.com\/denmark\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.systra.com\/denmark\/en\/project\/bridge-superstructure-repair-on-thorstedvej\/#primaryimage"},"image":{"@id":"https:\/\/www.systra.com\/denmark\/en\/project\/bridge-superstructure-repair-on-thorstedvej\/#primaryimage"},"thumbnailUrl":"https:\/\/www.systra.com\/denmark\/wp-content\/uploads\/sites\/26\/2026\/04\/img_2869_klippet-scaled.jpg","datePublished":"2026-04-27T09:20:19+00:00","dateModified":"2026-04-27T09:20:41+00:00","description":"Bridge superstructure repair on Thorstedvej - SYSTRA er en af verdens f\u00f8rende ingeni\u00f8r- og r\u00e5dgivningskoncerner med speciale i offentlig transport og mobilitetsl\u00f8sninger.","breadcrumb":{"@id":"https:\/\/www.systra.com\/denmark\/en\/project\/bridge-superstructure-repair-on-thorstedvej\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.systra.com\/denmark\/en\/project\/bridge-superstructure-repair-on-thorstedvej\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.systra.com\/denmark\/en\/project\/bridge-superstructure-repair-on-thorstedvej\/#primaryimage","url":"https:\/\/www.systra.com\/denmark\/wp-content\/uploads\/sites\/26\/2026\/04\/img_2869_klippet-scaled.jpg","contentUrl":"https:\/\/www.systra.com\/denmark\/wp-content\/uploads\/sites\/26\/2026\/04\/img_2869_klippet-scaled.jpg","width":2560,"height":2232},{"@type":"BreadcrumbList","@id":"https:\/\/www.systra.com\/denmark\/en\/project\/bridge-superstructure-repair-on-thorstedvej\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.systra.com\/denmark"},{"@type":"ListItem","position":2,"name":"Projects"}]},{"@type":"WebSite","@id":"https:\/\/www.systra.com\/denmark\/#website","url":"https:\/\/www.systra.com\/denmark\/","name":"Denmark","description":"Un site utilisant Les sites de Systra","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.systra.com\/denmark\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"lang":"en","translations":{"en":75852},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/projects\/75852","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/projects"}],"about":[{"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/types\/projects"}],"author":[{"embeddable":true,"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/users\/102"}],"version-history":[{"count":2,"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/projects\/75852\/revisions"}],"predecessor-version":[{"id":75854,"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/projects\/75852\/revisions\/75854"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/media\/75844"}],"wp:attachment":[{"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/media?parent=75852"}],"wp:term":[{"taxonomy":"type-market","embeddable":true,"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/type-market?post=75852"},{"taxonomy":"project-market","embeddable":true,"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/project-market?post=75852"},{"taxonomy":"project-service","embeddable":true,"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/project-service?post=75852"},{"taxonomy":"project-location","embeddable":true,"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/project-location?post=75852"},{"taxonomy":"type-service","embeddable":true,"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/type-service?post=75852"},{"taxonomy":"type-solution","embeddable":true,"href":"https:\/\/www.systra.com\/denmark\/wp-json\/wp\/v2\/type-solution?post=75852"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}