France

Implenia and Demathieu Bard Construction Win Contract for Lot 3 of Line C of the Toulouse Metro

3D visualisation of the tunnel model for Lot 3 of Line C of the Toulouse Metro
Credit/Quelle: Implenia

3D visualisation of the tunnel model for Lot 3 of Line C of the Toulouse Metro
Credit/Quelle: Implenia
A joint venture (JV) consisting of Implenia (50%) and Demathieu Bard Construction (50%) 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. Line C is scheduled to run from Colomiers to Labège from the end of 2028. The project will last 57 months and has a total budget of 331.4 million euros.  

3814 m of Tunnel Beneath a Densely
Populated Urban Area

Lot 3 includes drilling 3814 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, plus 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 being used for planning and executing the project.  

Fibre-Reinforced Concrete Segments To Keep the CO2 Footprint Low

The joint venture’s bid placed particular emphasis on sustainability: the use of fibre-reinforced concrete segments will keep the CO2 footprint of the project as low as possible, while the trees on the site will be protected and preserved throughout the entire construction period. In addition, 98% of the excavated material will be recycled. Christian Späth, Head Division Civil Engineering at Implenia, is excited about the project: “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.”

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