Turin-Lyon High-Speed Railway - Lot 2

The project regarding Lot 2 (Work Sites 6,La Praz, and 7, Saint-Martin-de-la-Porte) of the Tunnel Euralpin Lyon-Turin (TELT) Project, entails excavating 25 km of the base tunnel, with 3 tunnel boring machines (TBMs) for most of the route, and 21 km more with conventional methods (explosives and mechanized means “Drill&Blast”).

The excavation work includes not only the two main tunnels for train circulation, but also creating 71 safety branches, as well as numerous tunnels and technical caverns, some reaching over 20 meters in height.

The contract was awarded to the consortium, composed of Webuild (50%), VINCI Construction Grands Projets (leader), Dodin Campenon Bernard, and Campenon Bernard Centre Est.

The Tunnel Euralpin Lyon-Turin (TELT) Project Overview

The Tunnel Euralpin Lyon-Turin (TELT) - a 57.5 km tunnel connecting Saint-Jean-de-Maurienne in France to Susa in Italy- is part of the program to develop European economic exchanges and improve passenger traffic. The project will enable a sustainable transition in freight transport by shifting long-distance transportation to rail. With one million fewer trucks along theAlpine roads by 2030, the entire Tunnel Euralpin Lyon-Turin will allow reducing 1 million tons of CO₂ emissions per year, therefore representing a strategic link within the TEN-T Mediterranean Corridor, connecting Eastern to Western Europe.

A total of 11.2 million tonnes of excavated material and 55 km of conveyor belts to carry this material out of the tunnel are also foreseen.
The first of the 3 TBMs that will excavate these construction sites measures 180 metres in length, weighing 2,300 tonnes, with a cutting-head of 10.4 metres in diameter. It will be used to excavate 9 km of the base tunnel, from Saint-Martin-de-La-Porte towards La Praz.