New "tunnel-in-a-tunnel" method

A new inner shell for the Sasslatsch tunnel

The Bever-Scuol-Tarasp railway line is a narrow metre gauge railway. Built at the beginning of the 20th century, it is operated by the Rhaetian Railway. This line includes the Sasslatsch connecting tunnel between Susch and Lavin, which was renovated from 2016 to June 2017 with a new "tunnel-in-a-tunnel" method. The old vault walling was excavated, the tunnel was widened, re-anchored and fixed with shotcrete. The tunnel was then lined with sealed precast concrete elements and filled in with gravel.


ARGE Marti Sassa (Marti Tunnel AG)




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