where is the bridge that turns into a tunnel in va
Chesapeake Bay Bridge–Tunnel The Chesapeake Bay Bridge–Tunnel (CBBT) is a 23-mile (37 km) bridge–tunnel crossing at the mouth of the Chesapeake Bay, the Hampton Roads harbor, and nearby mouths of the James and Elizabeth Rivers in the American state of Virginia. It connects Northampton County on the Delmarva Peninsula and Eastern Shore with Virginia Beach, Norfolk, Chesapeake, and Portsmouth on the Western Shore and South side / Tidewater which are part of the Hampton Roads metropolitan area of eight close cities around the harbor's shores and peninsula. The Bridge-Tunnel originally combined 12 miles (19 km) of trestle, two 1-mile-long (1.6 km) tunnels, four artificial islands, four high-level bridges, approximately 2 miles (3.2 km) of causeway, and 5.5 miles (8.9 km) of northeast and southwest approach roads—crossing the Chesapeake Bay and preserving traffic on the Thimble Shoals and Chesapeake dredged shipping channels leading to the Atlantic. It replaced vehicle ferry services that operated from South Hampton Roads and from the Virginia Peninsula since the 1930s. Financed by toll revenue bonds, the Bridge–Tunnel was opened on April 15, 1964,[1] and remains one of only ten bridge–tunnel systems in the world, three of which are located in the water dominated Hampton Roads area of Tidewater Virginia.
Holland Tunnel The northern tube, which carries westbound traffic, originates at Broome Street in Manhattan between Varick and Hudson Streets; it continues to 14th Street east of Marin Boulevard in Jersey City. The southern tube, for eastbound traffic, originates at 12th Street east of Marin Boulevard, and surfaces at the Holland Tunnel Rotary in Manhattan.[5] The entrance and exit ramps to and from each portal are lined with granite and are 30 feet (9.1 m) wide.[3]:5 Although the two tubes' underwater sections are parallel, the tubes' portals on either side are located two blocks away from each other, in order to reduce congestion on each side.[8][3]:4 The Holland Tunnel's tubes initially contained a road surface made of Belgian blocks and concrete, but this has since been replaced with asphalt in 1955.[3]:5 Each tube contains a catwalk on its left (inner) side, raised 4 feet (1.2 m) above the roadway.[5] Five emergency-exit cross-passages connect the two tubes' inner catwalks.[3]:6 When the Holland Tunnel opened, the catwalk was equipped with police booths and a telephone system, stationed at intervals of 250 feet (76 m).[8]