Lausanne M2 metro line, lot 1700

  • Metro line from Ouchy to Epalinges, via main railway station and Place de l'Europe. Total length 6 km, 14 stations, 9 tunnels and 5 bridge structures.
  • Lot 1700: "Route de Berne" Tunnel between the Sallaz and Fourmi stations. Sallaz station and cut-and-cover construction. Fourmi underground station including interior construction, access shaft.

  • Heading with roadheader machine.
  • Construction methods using pipe umbrella and horizontal jetting to consolidate the excavation profile and stabilise the working face.
  • Rock secured with steel installation or anchors, plus reinforcement mesh and shotcrete.


Specific figures

Contract value

CHF 36 million

Construction period

March 2004 - April 2007


839 m

Total excavated surface

58 m2