In central Italy, BESIX and its Italian partner DONATI are doubling the state road 318 over 3.1 kilometers on behalf of the Italian Highway Authority ANAS. This stretch of road includes the Picchiarella and Casa Castalda tunnels, with lengths of 874 metres and 1,545 metres respectively, as well as the Tre Vescovi viaduct and the Calvario bridge. The project will improve the connection and traffic flow between the cities of Perugia and Ancona. The existing road connecting the two cities will remain in service for the duration of the work.