News

On behalf of the Swiss Federal Roads Office, FEDRO, ILF took the lead in the local site supervision in an engineering consortium for completing the works at the Belchen rehabilitation tunnel.

The project includes the connection of 11 cross passages to the existing central tube, two service tunnels between the existing and new portal control stations, two crossing passages for the emergency services at the tunnel entrance, a smoke partition wall and an access ramp to the isolated construction site.
The excavation works with a 13.97 diameter TBM taking place at the same time as the structural construction works for the 3.2 km long tunnel were very complex with regard to logistics, design, planning and construction.