New digging method will expand bridge-tunnel
NORFOLK — Some of the world’s most sophisticated tunnel technology will be used to expand the Hampton Roads Bridge-Tunnel.
Contractors will use a massive machine to dig through the soil under Hampton Roads Harbor, The Daily Press reported.
The digging will be a change from the previous method used to build or expand bridge tunnels in coastal Virginia. That method involved submersing prefabricated pieces of tunnel into a trench.
Contractors will add a new bridge-tunnel parallel to the existing ones that carry Interstate 64 from Norfolk to Hampton.
The project will accommodate more traffic and will cost more than $3 billion. The state expects to choose a contractor for the project early next year.