We were mandated by the Comisión Federal de Electricidad to construct a double-curvature arch dam measuring 207 metres high and 115 metres long at the ridge. This project included a diversion tunnel, a spillway tunnel capable of evacuating 3,000 m³/s, 2 tunnels (618 m long), a water intake, 21 kilometres of concrete-lined intake gallery, a surge chamber, a sloped penstock pipe and an underground plant equipped with two 146-megawatt turbines.

We were commissioned by Eurotunnel to build three key turnkey tunnels with a total length of 150 kilometres. The tunnels, which run for 10 kilometres underground and 54 kilometres beneath the sea, include: 2 single-track rail tunnels and 1 service tunnel. Drilled to a depth of 25 to 45 metres below the seabed of the English Channel in a rocky layer of “blue chalk”, this underground rail link connects France to England.