Various excavation methods were employed when constructing the Uetliberg Tunnel. Blasting, excavation by tunnel boring machine (TBM), a tunnel bore extender (TBE) using the undercut technique, calotte driving and surface mining. The volume excavated was 1.7 million m3.
2 x 4.4 km (dual lane)
Civil Engineering Office, Canton of Zurich
2001 - 2006
Execution by Renaissance Construction Schweiz