NPRA – Floating Under Water Tunnels – Norway - Project Profile
"NPRA – Floating Under Water Tunnels – Norway - Project Profile" contains information on the scope of the project including project overview and location. The profile also details project ownership and funding, gives a full project description, as well as information on contracts, tendering and key project contacts.
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The Norwegian Public Roads Administration (NPRA) is planning to undertake the construction of floating under water tunnels in Norway.
The project involves the construction of floating under water tunnels between the southern city of Kristiansand and Trondheim in the north, through various fjord. The proposed tunnels will be composed of two curved 1,200m long concrete tubes, one for each direction, hanging 20 to 30m below the surface. Each tube will have room for two lanes - one for travel and one for emergencies and repair work.
The first of these tunnels is being proposed for Sognefjord and will connect the villages of Oppedal and Lavik, passing through the 1,300m (4,300ft) deep, and 1,000m (3,300ft) wide.
A feasibility study conducted in 2012 by NPRA revealed that the floating tunnel could be the best way to bridge the fjord.
Subject to the plans approval, the tunnels could be constructed between seven and nine years, although a number of geological surveys still need to be completed. NPRA is also preparing a feasibility study for one of the largest fjords on the route - Bjørnafjord.
Planning activities are underway.
The project involves the construction of floating under water tunnels between the southern city of Kristiansand and Trondheim in the north, through various fjord in Norway.
The US$25,000 million project includes the following:
1. Construction of two curved, 1200m long concrete tubes on the route Sognefjord
2. Installation of floating pontoons on the surface on the route Sognefjord
3. Installation of lightning and safety systems
4. Construction of related facilities
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