The underpass on rue du Léman is being rebuilt in order to meet the needs of both railway and road traffic.

In terms of the railway tracks, we are extending the structure to the north to make it compatible with the future fourth track and flyover installations, our key projects between Lausanne and Renens.

In terms of the roadway, we have worked with the municipality of Renens to ensure that the size of the new underpass will improve the flows of road traffic and human-powered mobility.

• We are extending the structure 11 m to the north;
• The underpass is also being widened to accommodate the 3 types of mobility (pedestrians, cyclists and road traffic) in both directions in the same space;
• We are increasing the height to 4.50 m with no restrictions for heavy goods vehicles;
• Finally, we are constructing new networks (clean water and gas) underneath the roadway and rerouting other networks (electricity, internet, telephone, etc.)