Implenia wins contract for Line C of the Toulouse Metro

Implenia and Demathieu Bard Construction joint venture (JV) has been awarded the contract for Lot 3 of future Line C of the Toulouse Metro by Tisséo, the public transport authority for Greater Toulouse.

Interpretation of part of the Toulouse Metro (Photo: Implenia)

Line C is scheduled to run from Colomiers to Labège from the end of 2028 with the project estimated to last 57 months.

Implenia’s share of the contract is worth approximately €166 million and includes drilling 3,814 m of tunnel beneath a densely populated urban area, as well as civil engineering work for the construction of four underground stations at a depth of 24 to 39 m, in addition to three ancillary structures.

The joint venture has proposed using the ‘Variable Density Conveyor’ method, an innovative tunnelling solution that will help cope with the challenges presented by different soil conditions. BIM (Building Information Modeling) is also said to be used for planning and executing the project.

Implenia and Demathieu Bard Construction’s bid highlighted that sustainability was a top priority. The JV will use fibre-reinforced concrete tubbings, whilst trees on the site will be protected and preserved throughout the entire construction period. 

Christian Späth, Head Division of Civil Engineering at Implenia, says, “Alongside the lots of the Grand Paris Express and TELT (Lyon-Turin), this is another large and complex infrastructure project for our team in France. It fits our strategy and is an ideal opportunity for us to contribute our many years of experience and our comprehensive expertise in tunnelling and associated civil engineering disciplines.”