{"id":3526,"date":"2026-04-14T13:06:37","date_gmt":"2026-04-14T11:06:37","guid":{"rendered":"https:\/\/www.igeas.com\/?post_type=realizzazioni&#038;p=3526"},"modified":"2026-05-04T12:58:53","modified_gmt":"2026-05-04T10:58:53","slug":"construction-works-for-the-variant-of-state-road-no-29-bypassing-the-town-of-dego-sv-between-km-120000-and-km-124750-lot-1-and-lot-2","status":"publish","type":"realizzazioni","link":"https:\/\/www.igeas.com\/en\/projects\/construction-works-for-the-variant-of-state-road-no-29-bypassing-the-town-of-dego-sv-between-km-120000-and-km-124750-lot-1-and-lot-2\/","title":{"rendered":"Construction works for the variant of State Road No. 29 bypassing the town of Dego (SV), between km 120+000 and km 124+750 \u2013 Lot 1 and Lot 2."},"content":{"rendered":"<p><strong>Project objective<\/strong><\/p>\n<p>Our Company prepared the construction design on behalf of the two Contractors for the bypass of the town of Dego, in the Province of Savona.<br \/>\nWithin the works related to Lot 2, the main structure was the viaduct over the Bormida River.<br \/>\nThe viaduct design required a change in the construction typology compared to that originally envisaged by the contracting authority ANAS S.p.A.<\/p>\n<p><strong>Main works<\/strong><\/p>\n<p><em>Viaduct over the Bormida River<\/em><br \/>\nThe detailed design was based on a comprehensive topographic survey and an in-depth geognostic investigation.<br \/>\nIn particular, it was necessary to modify the span arrangement and the construction typology compared to the preliminary design developed by ANAS S.p.A.<br \/>\nThe viaduct, with a total length of 300 m, was built with a constant pier spacing of 50.0 m, adopting a construction method that allowed erection of the deck without using mobile cranes due to the inaccessibility of the areas below for heavy vehicles.<br \/>\nThe adopted structure is a composite steel\u2013concrete system with twin CORTEN steel girders, launched incrementally (\u201cpushed\u201d) from the Savona-side abutment to form a continuous girder along the entire length.<br \/>\nBased on the results of the geognostic investigation, a differentiated foundation system was selected for piers and abutments according to local geostratigraphic and geotechnical conditions and the need to prevent scour phenomena at the piers adjacent to the riverbed.<br \/>\nAdoption of the new construction technique enabled completion of the structure in shorter times than originally envisaged, without significant cost increases.<\/p>\n","protected":false},"featured_media":1238,"parent":0,"template":"","settore":[26,30,31],"class_list":["post-3526","realizzazioni","type-realizzazioni","status-publish","has-post-thumbnail","hentry","settore-road-infrastructures","settore-underground-works","settore-bridges-and-viaducts"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Construction works for the variant of State Road No. 29 bypassing the town of Dego (SV), between km 120+000 and km 124+750 \u2013 Lot 1 and Lot 2. - IGEAS Engineering S.r.l.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.igeas.com\/en\/projects\/construction-works-for-the-variant-of-state-road-no-29-bypassing-the-town-of-dego-sv-between-km-120000-and-km-124750-lot-1-and-lot-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Construction works for the variant of State Road No. 29 bypassing the town of Dego (SV), between km 120+000 and km 124+750 \u2013 Lot 1 and Lot 2. - IGEAS Engineering S.r.l.\" \/>\n<meta property=\"og:description\" content=\"Project objective Our Company prepared the construction design on behalf of the two Contractors for the bypass of the town of Dego, in the Province of Savona. Within the works related to Lot 2, the main structure was the viaduct over the Bormida River. The viaduct design required a change in the construction typology compared [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.igeas.com\/en\/projects\/construction-works-for-the-variant-of-state-road-no-29-bypassing-the-town-of-dego-sv-between-km-120000-and-km-124750-lot-1-and-lot-2\/\" \/>\n<meta property=\"og:site_name\" content=\"IGEAS Engineering S.r.l.\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-04T10:58:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.igeas.com\/wp-content\/uploads\/2026\/03\/003_GHELLA_Variante_Dego-0-14.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"768\" \/>\n\t<meta property=\"og:image:height\" content=\"768\" \/>\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=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.igeas.com\\\/en\\\/projects\\\/construction-works-for-the-variant-of-state-road-no-29-bypassing-the-town-of-dego-sv-between-km-120000-and-km-124750-lot-1-and-lot-2\\\/\",\"url\":\"https:\\\/\\\/www.igeas.com\\\/en\\\/projects\\\/construction-works-for-the-variant-of-state-road-no-29-bypassing-the-town-of-dego-sv-between-km-120000-and-km-124750-lot-1-and-lot-2\\\/\",\"name\":\"Construction works for the variant of State Road No. 29 bypassing the town of Dego (SV), between km 120+000 and km 124+750 \u2013 Lot 1 and Lot 2. - 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IGEAS Engineering S.r.l.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.igeas.com\/en\/projects\/construction-works-for-the-variant-of-state-road-no-29-bypassing-the-town-of-dego-sv-between-km-120000-and-km-124750-lot-1-and-lot-2\/","og_locale":"en_US","og_type":"article","og_title":"Construction works for the variant of State Road No. 29 bypassing the town of Dego (SV), between km 120+000 and km 124+750 \u2013 Lot 1 and Lot 2. - IGEAS Engineering S.r.l.","og_description":"Project objective Our Company prepared the construction design on behalf of the two Contractors for the bypass of the town of Dego, in the Province of Savona. 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