Start-up ceremony for the Belchen tunnel

The largest tunnel boring machine ever used in Switzerland was put into operation by pressing the famous red button at 11.15 a.m. After only a few minutes, the conveyor system conveyed the first excavation material under the spectator's marveling​ glances.

The tunnel boring machine with a drill head diameter of 13,97 meters, a length of 75 meters and a total weight of 2'000 tons will break through the Belchen on the north side in Eptingen BL in three years. A total of 470'000 cubic meters​ of rock will be excavated.

Marti Tunnelbau AG


Marti Gruppe
Seedorffeldstrasse 21
3302 Moosseedorf
+41 31 388 75 75