Rotwald tunnel

Project overview

The 385-metre-long Rotwald tunnel is one of two tunnels belonging to the Bazenheid bypass in the canton of St. Gallen, and was constructed on an open-cast basis, using mining techniques. The challenging geological and hydrological conditions (heterogeneous geology, granular soil, groundwater) and minimal cover at certain points called for a sophisticated construction method with auxiliary construction measures (pipe arch, soil injections, drainage) and groundwater culvert.

Expertise involved



Kanton St. Gallen, Tiefbauamt, Abteilung Strassen und Kunstbauten

Our services

Management of project phases from project planning, invitations to tender and implementation, as well as support in public-relations work.

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