{"id":19526,"date":"2025-08-31T12:50:28","date_gmt":"2025-08-31T12:50:28","guid":{"rendered":"https:\/\/tunnelingworld.com\/?p=19526"},"modified":"2025-08-31T12:50:28","modified_gmt":"2025-08-31T12:50:28","slug":"brenner-base-tunnel-first-breakthrough-of-main-tunnel-tube-in-austria","status":"publish","type":"post","link":"https:\/\/tunnelingworld.com\/?p=19526","title":{"rendered":"Brenner Base Tunnel &#8211; First breakthrough of main tunnel tube in Austria"},"content":{"rendered":"<p style=\"text-align: justify;\">Following that TBM Ida, working on the H41 Sill Gorge-Pfons construction lot, completed a 8.4km drive to reach her destination in the town of Navis, the Brenner Base Tunnel project has recorded the first breakthrough of a main tunnel tube in Austria.<\/p>\n<p style=\"text-align: justify;\">Being commissioned in June 2023 from Ahrental, near Innsbruck, this 10.4m-diameter, 160m-long TBM travelled south to build the western main tunnel tube, that included three complex geological fault zones: the Viggartal and Walzn, and the approximately 35m-wide Werner zone, which was successfully negotiated at the beginning of this year.<\/p>\n<p style=\"text-align: justify;\">According to BBT SE board members Martin Gradnitzer and Gilberto Cardola: &#8220;After the last Italian TBM arrived at the border at the Brenner Pass in May, TBM Ida\u2019s breakthrough marked another key project success on the Austrian side.&#8221;<\/p>\n<p style=\"text-align: justify;\">Naming of Ida was up to children from the Navis Elementary School, and in July they decorated one of the final tunnel segments produced at the factory in Ahrental.<\/p>\n<p style=\"text-align: justify;\">The scheduled date for TBM Lilia to break through on the eastern main tunnel tube is the autumn to complete all mechanised excavation on Lot 41.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Following that TBM Ida, working on the H41 Sill Gorge-Pfons construction lot, completed a 8.4km drive to reach her destination in the town of Navis, the Brenner Base Tunnel project has recorded the first breakthrough of a main tunnel tube in Austria. Being commissioned in June 2023 from Ahrental, near Innsbruck, this 10.4m-diameter, 160m-long TBM travelled south to build the western main tunnel tube, that included three complex geological fault zones: the Viggartal and Walzn, and the approximately 35m-wide Werner zone, which was successfully negotiated at the beginning of this year. According to BBT SE board members Martin Gradnitzer and [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":19527,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4001],"tags":[373,374,4571,3002,47],"class_list":["post-19526","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-contract-projects","tag-austria","tag-brenner-base-tunnel","tag-h41-sill-gorge-pfons","tag-tbm-ida","tag-tunneling","post--single"],"_links":{"self":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts\/19526","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19526"}],"version-history":[{"count":1,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts\/19526\/revisions"}],"predecessor-version":[{"id":19528,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts\/19526\/revisions\/19528"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/media\/19527"}],"wp:attachment":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19526"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19526"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19526"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}