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Vinci, Dragados and Flatiron JV wins bridge-tunnel contract

A JV made up of Vinci, Dragados and Flatiron has won the design-build contract Hampton Roads Bridge-Tunnel (HRBT) expansion project in Virginia, US.

Worth US$3.3bn (£2.55bn), the contract includes designing and building 5.3 km of viaducts over the sea and new tunnels, as well as widening 14.5km of existing roads.

Two 2.4km tunnels will be bored between two artificial islands using a variable density tunnel boring machine with a diameter of 13.56m. The two islands will then be connected to the continent by two viaducts over the sea, the first measuring 1km and the other 1.9km.

The joint venture comprises of Vinci Construction Grands Projets and Dodin Campenon Bernard, both Vinci Construction subsidiaries (33%), Dragados USA (42%) and Hochtief subsidiary Flatiron Construction (25%).

When completed the scheme will help traffic flow on a road that is currently used by over 100,000 vehicles daily, causing tailbacks of up to 8km to the bridge upstream.

In addition, the contract includes demolition, reconstruction and widening works will be carried out over 14.5 km of road and two additional traffic lanes will be created in each direction.

In total the scheme will take 18 months of studies and 56 months of construction works and will be open in 2025. 

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