Proven expertise.

Safety gallery, Giswil

Safety gallery with escape cross-over points every 300 m, tunnel length 1,970 m.

Mechanical hard rock heading with 3.90 m diameter gripper TBM

Map

Specific figures

Contract value

CHF 6.4 million

Construction period

2003 - 2004

Length

1970 m

Total excavated surface

12 m2