{"id":30838,"date":"2025-07-23T13:02:20","date_gmt":"2025-07-23T11:02:20","guid":{"rendered":"https:\/\/www.comsa.com\/comsa-ejecutara-la-fase-1-de-la-variante-sur-ferroviaria-de-bilbao\/"},"modified":"2025-09-03T13:06:38","modified_gmt":"2025-09-03T11:06:38","slug":"comsa-ejecutara-la-fase-1-de-la-variante-sur-ferroviaria-de-bilbao","status":"publish","type":"post","link":"https:\/\/www.comsa.com\/en\/infrastructures\/comsa-ejecutara-la-fase-1-de-la-variante-sur-ferroviaria-de-bilbao\/","title":{"rendered":"COMSA will execute Phase 1 of the Bilbao Southern Railway Bypass"},"content":{"rendered":"<p>COMSA, in a joint venture with Campezo Obras y Servicios, Grupo Azvi and Iza Obras y Promociones, will develop Phase 1 of the Bilbao Southern Railway Bypass \u2013 Serantes Connection section, a strategic infrastructure promoted by ETS to improve the connection between the Port of Bilbao and the national railway network and promote sustainable freight transport.<\/p>\n<p>The project involves the construction of more than 3.4 km of tunnels excavated using the cut-and-cover method, the construction of three large caverns and various structures such as false tunnels, emergency exits, pedestrian galleries and technical buildings.<\/p>\n<p>The infrastructure is structured around four main axes:<\/p>\n<p style=\"padding-left: 40px;\">1.\u00a0 Connection branch to the Serantes cut-and-cover tunnel (385 m)<br \/>\n2. South Bypass trunk line \u2013 Phase 1 (736 m)<br \/>\n3. Serantes 1 branch: mine tunnel for single track (1,300 m)<br \/>\n4. Serantes \u2013 Olabeaga trunk line (620 m)<br \/>\n5. Emergency exits (760 m)<\/p>\n<p>With this new contract, COMSA reinforces its experience in complex underground works and its commitment to a more efficient, intermodal and environmentally friendly transport system.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>COMSA, in a joint venture with Campezo Obras y Servicios, Grupo Azvi and Iza Obras y Promociones, will develop Phase 1 of the Bilbao Southern Railway Bypass \u2013 Serantes Connection section, a strategic infrastructure promoted by ETS to improve the connection between the Port of Bilbao and the national railway network and promote sustainable freight [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":30835,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1155],"tags":[],"class_list":["post-30838","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-infrastructures"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>COMSA will execute Phase 1 of the Bilbao Southern Railway Bypass<\/title>\n<meta name=\"description\" content=\"COMSA, in a joint venture with Campezo Obras y Servicios, Grupo Azvi and Iza Obras y Promociones, will develop Phase 1 of the Bilbao Southern Railway\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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