National Road S.S.340 - Tremezzina Bypass (Italy) (year:2014)

Final design of road tunnels

The entire layout of the road is in very deep mountain region (Como Lake) for the new roadway S.S. 340 "Regina" in Italy (11.6 km length). The 6 new tunnels have a total length of 7.755 m and are boring in rock geological formations.

The main problem is the position of the construction site in this unfavorable morphological area. Designer's idea was to boring and then to use the emergency tunnel of the main tunnel as a site track for mucking and sourcing of materials.

The tunnel systems were optimized and improved by providing: permanent lighting LED system; illuminated LED signs; fire system; pressurisation system; monitoring and environmental control systems.