Crews immersed Element 11, the final of the 16,000t concrete-reinforced tunnel elements to create the new tunnel, on Tuesday morning. Work to place the first element started in October 2014.

The two-lane road tunnel is part of the largest design build project in the Hampton Roads region’s history. Hampton Roads refers to the area in the middle of the Eastern seaboard where the James, Nansemond and Elizabeth rivers pour into the mouth of the Chesapeake Bay. Some 1.6 million people live in the region and rely on Virginia’s existing Midtown Tunnel, which carries more than one million vehicles per month.