The main tunnels are 64 km each. But because there are two 8.1 meter wide main bores, an exploratory/drainage bore and various access tunnels, the total length of tunnels will be 230 km.
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| HeidelbergCement When completed in 2025, the 64 km long Brenner Base Tunnel (BBT) will be the world’s longest underground rail tunnel, traversing below the Alps from Innsbruck (Austria) to Fortezza (Italy). The tunnel will serve as the most important link in the Berlin-Palermo high-capacity rail axis, and is designed to shift freight transport from the roads to the rails....Because up to 70% of excavation for the BBT are to be performed by machine, six tunnel boring machines will be in operation simultaneously over the course of 2018. Ultimately, as many as nine of the gigantic drilling machines, which can excavate as much as 40 metres each per day, will be deployed. |
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| BBT SE Photo via railway-technology In recent years, tailbacks as long as 100km have been reported on the stretch. Last year, more than million heavy lorries travelled the 1,370m pass – the lowest in the eastern chain of the Alps – accounting for 40% of cargo transported across Europe’s largest mountain range....A train journey from Munich to Verona could be as short as four hours; currently it is seven hours....Then, around 320 goods and 80 passenger trains will pass under the Alps, with freight trains running at speeds of up to 160km/h and passenger trains at up to 250km/h. |
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| safe_image for Herrenknecht TBM Reaches Milestone on Brenner Base Tunnel 61 meters and 4 centimeters in just 24 hours with a modern Gripper TBM – in May 2020 the tunnelers at the Brenner Base Tunnel were able to set a new record in hard rock tunneling. |
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| safe_image for Brenner Base Tunnel | Construction milestone hit on world’s longest railway tunnel The record – 860m of tunnel bored and lined in one month. |
3:34 video $11b US dollars A good video of narration over interesting scenes and diagrams except for the use of background "music." Why do video editors now think people can't just listen to words? At least they kept the volume of the music low during the narrations.
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