Lausanne-Chauderon – Union-Prilly Tunnel

PROJECT

CLIENT	LEB Lausanne - Echallens - Bercher railway
LOCATION	Lausanne (VD)
DURATION	2015 - 2022

The Lausanne–Echallens–Bercher metre gauge railway links the centre of Lausanne with the areas in the northwest of the city and the district of Gros-de-Vaud. To meet a demand to increase the fre-quency of the service, on the one hand, and to improve safety, on the other, the current tunnel needs to be extended to around 1.7 km. This work will allow a completely free-standing double-track infrastructure to be provided.

HIGHLIGHTS

Work on the city site:
- Main tunnel created underground primarily in molasse, locally on soft ground.
- Open railway tunnel approach.
- Architectural integration of structure.
- Adaptation of Union-Prilly station and PRM compliance.
Keeping inconvenience to a minimum:
- Operating rail and road traffic on a temporary bridge while work is being carried out.
- Occasional interruption of traffic during “spot checks” carried out.
- Removal of a large volume of the excavated material by rail.

OUR SERVICES

Representative of a group of engineers tasked with the project and its implementation. Incorporation of the SIA phases:
- Structure studies.
- Invitation to tender for work.
- Monitoring of execution and commissioning.
Project environmental impact studies.
Coordination of railway technology.

LEB construction site over time (in French)