A bored tunnel has been chosen for next connection across Hampton Roads Harbour in Virginia, US.
The Virginia Department of Transportation (VDOT) has announced that a bored-tunnel construction method has been selected for the next connection across the Hampton Roads Harbour.
Competing bidders for the project, Hampton Roads Capacity Constructors and Hampton Roads Connector Partners, notified VDOT that they had selected the bored-tunnel method as the basis for their bid proposals, which will be submitted in late 2018.
VDOT commissioner Stephen Brich said: “The selection of a bored tunnel means Hampton Roads will see some of the world’s most sophisticated tunnel technology at work. Once complete, this new crossing will greatly improve accessibility, transit, emergency evacuation, and military and goods movement along the I-64 corridor.”
updated for syip project corridor map april 2018
Although the immersed-tube method was used to construct all ten of Hampton Roads’ existing crossings – from the original Downtown Tunnel in 1952 to the new Midtown Tunnel in 2016, according to the VDOT recent technology advances have now made bored tunnels feasible in the region’s soft soils.
This project will be the VDOT’s first bored tunnel.
The Hampton Roads Harbour Expansion project will build a new bridge-tunnel adjacent to the existing Hampton Roads Bridge-Tunnel and widen the four-lane segments of I-64 in Hampton and Norfolk to ease daily congestion between the Peninsula and South Hampton Roads.
Costing between $3.3bn (£2.55bn) and $3.8 (£2.94bn), the contract will be awarded in early 2019 with construction complete in 2024.