{"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"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Brenner Base Tunnel - First breakthrough of main tunnel tube in Austria - Tunnelingworld<\/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:\/\/tunnelingworld.com\/?p=19526\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Brenner Base Tunnel - First breakthrough of main tunnel tube in Austria - Tunnelingworld\" \/>\n<meta property=\"og:description\" content=\"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. 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