Gibraltar Strait Tunnel

The project includes a 38.7km-long twin tunnel linking Spain to Morocco, out of which 28km will run below the sea, with an intermediate safety/service tunnel, similar to the well-known connection under The Channel. Recent investigations highlighted the presence of two deep (more than 600m under the sea level) paleo-channels intersecting at two locations the selected tunnel alignment, which are filled with deposits of clayey breccias, of flysch origin. The geological and hydro-geological conditions along the route still represent a source of uncertainty, despite the extensive investigations already done. The railway tunnel will carry both passenger and goods trains, as well as high-speed and special trains.

Updating of the “APP-Avant Projet Primaire” - preliminary design – and preparation of the Environmental Impact Study.