Alternate route to National Road S.S.639 (Lecco, Italy) (year:2012)

The project takes place in being one of the fundamental works in order to provide the upgrading of the level of service of the existing routes between the city of Lecco and the city of Bergamo. It focuses not only on the upgrading and the modernisation of the existing transportation system, but also on the design of new alternative routes, which require both great technical skills and financial commitment.

The detailed design comprehends: works to the Northern roundabout, in conjuction with new branches out linked to the existing routes; "San Gerolamo" tunnel (2.220m length); 260m cut and cover tunnel (settled at the northern and southern entrances); emergency tunnel (1.450m length) connected to the main gallery at every rest area.