Lot Brescia Est-Verona

Project

The project consists in the construction of three railway tunnels in soft ground by means of conventional and mechanized tunneling (EPB machine) as well as the execution of several sections by means of cut and cover and top-down. The main challenges of the project are represented by the interference with the existing hydraulic systems and by the excavation at very low overburden underneath existing roads and highways.

Key data

• Conventional and mechanized tunnels for a total length of 11.2 km
• Cut and cover and top-down tunnels for a total length of 5.0 km
• Lonato Tunnel 7.6 km (diameter 10 m):
• Twin-tube tunnel excavated by means of TBM-EPB (about 4’800 m each)
• Two cut and cover tunnels partially mono-tube and partially twin-tube (2’781m)
• Maximum overburden = 98 m
• San Giorgio in Salici Tunnel 3.4 km (equivalent diameter about 14 m):
• Conventional tunnel, single tube (1 427m)
• Two cut and cover tunnels, single tube (1 966m)
• Maximum overburden = 23 m
• Calcinato II Tunnel 460m (equivalent diameter about 14 m):
• Conventional tunnel, single tube (230m)
• Maximum overburden = 30 m
• Two cut and cover tunnels, single tube (230m)
• Retaining structures
• Electrical, mechanical and firefighting systems, safety systems

Costs

CHF 470'000’000

Timeline

2018 – 2019 (design phase)
2020 – 2025 (construction phase)

Clients

JV CEPAV DUE

Services

• Detailed/Construction design
• Support during construction