Breakthrough on south portal of the longest undeground railway tunnel in the world!

The south portal wall of Brenner Base Tunnel was holed through on December 4.

BBT is an extremely complex system of tunnels, composed of two main tubes and one exploratory tunnel, several bypass, connections and emergency stops, as well as four access tunnels.

In this complex project, SWS provides a wide range of engineering services, demanding a high level of technical and professional skills. For the full project description click here

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