Lausanne–Renens: construction work on the fourth track.

The construction of a fourth track between Lausanne and Renens will improve the flow of traffic through the densest region of Western Switzerland. 

We would like to warn you, as a resident affected by this construction work, about occasional disruptions by giving you regular updates. You can read our calendar and our news updates to find out about upcoming work. 


  • 2015 – planning permission
  • 2016 – start of construction
  • December 2021 – start of operations

Engineering work updates.

We are currently carrying out the following work:

Work is currently being carried out between Lausanne (Marc Dufour bridge) and the train stop at Prilly-Malley. This new construction phase will enable us to make room for the fourth track and install the necessary railway infrastructure. While this is underway, all the existing infrastructure will also be modernised. 


From Lausanne rail station (Marc Dufour bridge) to the train stop at Prilly-Malley


October 2018 to December 2019 

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