Construction design and works supervision of 3.9 Km of high speed railway line and 3.9 Km of commuter railway line in the urban area of El Prat de Llobregat. In order to integrate the project in the urban environment, cut and cover tunnels with a length of 1,850m are constructed both for the high speed line and for the commuter line. Also, the cut and cover structure houses 2 stations, one for each railway line. Two railway viaducts are built over the Llobregat river.

Sant Boi de Llobregat / L’Hospitalet de Llobregat, Spain. (2004-2009).