NEAT Lötschberg-Base Tunnel

Consultant: IUB Engineering Ltd and IM Maggia Engineering Ltd as an engineering consortium

Scope of services: Preparation of the construction project, the project for the launch of the tender and the invitation to tender (SIA phases 31 -41) for the building shell and the technical equipment within the framework of an overall planning mandate.

Description: Only 14 kilometres of the 35-kilometre Lötschberg base tunnel can be used with two lanes. On a further 14 kilometres, a second tube has been excavated but is not equipped for railway operation. On the remaining 7 kilometres at the north portal, there is only one tube.
In the partial extension, the existing unfinished tube (14 km) will be upgraded in terms of construction and railway technology for dual-track operation.
In the full extension, an additional 7 km of tunnel will be excavated and upgraded for dual-track operation.
The second, already existing tube of the Engstligentunnel between Frutigen and Wengy-Ey will also be equipped with railway technology and connected to the existing line.

Main Data

Shell of the Lötschberg base tunnel

Lötschberg base tunnel equipment

Extension of the equipment in the fields of power supply 50 Hz, railway power supply 16.7 Hz, cable systems, earthing as well as protection and control technology.

Engstligentunnel equipment

Extension of the equipment in the fields of power supply 50 Hz, railway power supply 16.7 Hz, cable systems, earthing as well as protection and control technology.