The joint venture of Skanska and Kiewit has withdrawn its bid for the $3.6-billion expansion of the Hampton Roads Bridge Tunnel in Virginia. The team said the withdrawal was a business decision. It had submitted qualifications for using the immersed-tunnel construction method for the new four-lane tube connecting Hampton and Norfolk. The other two short-listed bidders—teams led by Fluor Enterprises Inc. and Dragados USA, respectively—submitted qualifications for both bored- and immersed-tunnel construction. The Virginia Dept. of Transportation is scheduled to announce the winning bidder early next year, with the four-year construction getting underway in 2020. Skanska and Kiewit had previously teamed with Weeks Marine Inc. to expand the nearby Midtown Tunnel.