Brenner - H41 Sill-Pfons Gorge

A strategic infrastructure project for the EU that will go a long way toward improving mobility and reducing pollution on the continent

At 64 kilometers in length, the Brenner Base Tunnel will be the longest underground rail tunnel in the world, connecting Italy and Austria below the Alps.

The Brenner Base Tunnel is the central element of the new Brenner railway line, linking the axis from Munich to Verona. At 64 km long (including the Innsbruck junction), when completed it will be the longest underground rail link in the world. The “Sotto attraversamento Isarco” section is the southern segment of the Brenner Base Tunnel. The lot involved the civil works of the two main tunnels totaling about 4.5 km and the two interconnecting tunnels that connect to the historic line, totaling about 1.7 km. Webuild is working on two other lots of the Brenner Base Tunnel. On the Italian side, it is working on Lot Mules 2-3. On the Austrian side, it has completed the Tulfes-Pfons lot and is working on Sill-Pfons Gorge. 

The configuration of the Brenner Base Tunnel will include two main, parallel, single-track tunnels, connected every 333 meters by cross passages, intended for securing or accommodating equipment. The two TBMs Ida and Lilia will excavate a total of about 16.5 kilometers of main tunnels, while the 38 transverse tunnels, totaling 2.3 kilometers, will be excavated by conventional methods (using explosives).

Lot H41 starts at the Sill Stream Gorge near Innsbruck in the north and ends at Pfons further south. The main works of this lot also include the completion of the Innsbruck emergency stop, the construction of an overpass to cross the A13 highway, and the excavation by traditional method in the direction of about 5.7 kilometers of tunnel.