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The Brenner Base Tunnel - an overview of the status of the project

The Brenner Base Tunnel - an overview of the status of the project


R. Insam / M. Rehbock / A. Marottoli / D. Marini / A. Voza / C. Nemec / D. Unteregger / C. Schwarz / G. Venditti

The Brenner Base Tunnel (BBT) runs for 64 km between Austria and Italy, making it the longest underground railway tunnel in the world. The BBT consists of two single-track tubes, cross passages every 333 m, an exploratory tunnel, and three emergency stops. The planning is underway since 1999, and construction began in 2007. More than half of a total 230 km of tunnel construction including 80% of the exploratory tunnel has already been excavated. Especially in the area of the emergency stops, a variety of underground construction activities is carried out in immediate vicinity, partly in very difficult geological conditions. The complexity of the surrounding conditions, with distances between cavities of a few meters only, intersecting structures, excavation sections up to 300 m², and overburden up to 900 m lead to a significant interaction between the structures. The paper will give a detailed overview over the status of the entire project, will describe selected aspects from the excavation works and will give an outlook on the coming challenges and schedule.

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Year 2022
City Copenhagen
Country Denmark
ISBN 978-2-9701436-7-3