But the Holland Tunnel, connecting New Jersey and New York City, remains flooded.

BBC: Storm Sandy: Obama surveys devastation in Atlantic City

In terms of sheer size and complexity, the Channel Tunnel or "Chunnel" connecting England and France is most frequently compared to the BST project.

CENTERFORSECURITYPOLICY: The Bering Strait Tunnel Project

On Saturday morning, police officers stopped and searched for a third day box trucks as they approached the George Washington Bridge, which links New Jersey with New York, as well as the Queens-Midtown Tunnel, the Holland Tunnel and the Verrazano-Narrows Bridge, connecting the boroughs of Staten Island and Brooklyn.

CNN: STORY HIGHLIGHTS