Carey Tunnel (formerly Brooklyn-Battery Tunnel) opened in 1950, it was the longest continuous underwater vehicular tunnel in North America. It still is.
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The Lincoln Tunnel is one of two automobile tunnels built under the Hudson River, the other being the Holland Tunnel between Jersey City, New Jersey and Lower Manhattan.
The three tunnels are: New York City Water Tunnel No. 1, completed in 1917. It runs from the Hillview Reservoir under the central Bronx, Harlem River, West Side, Midtown, and Lower East Side of Manhattan, and under the East River to Brooklyn where it connects to Tunnel 2.
Technically called “Tunnel Street,” the three-block-long passage is the city's only underground street, according to 6sqft. It serves as a Broadway entrance to the 191st Street subway station, which, at 175 feet underground, is the deepest in the system.
The tunnel itself was completed in 2008, and after the construction of seven riser shafts was completed, this section of the tunnel opened in 2013. Two additional riser shafts, each over 700 feet (210 m) deep, are under construction in Brooklyn and Queens as of 2022.
The project began in 2013 with the excavation of two vertical shafts in Newburgh and Wappinger to gain access to the subsurface. These shafts, 845 and 675 feet deep respectively, were completed in 2016. A massive tunnel boring machine completed excavation of the tunnel on Aug.
Today, underwater tunnels are often created with humongous tunnel-boring machines (TBMs) — sometimes called moles. These machines cost millions of dollars, but they can create large tunnels in a very short time. A circular plate with disk cutters rotates to cut through rock as the machine inches forward slowly.
Holland Tunnel, twin-tube vehicular tunnel under the Hudson River connecting Canal Street in Manhattan, New York, with 12th and 14th streets in Jersey City, New Jersey.
The Queens–Midtown Tunnel (often referred to as the Midtown Tunnel) is a vehicular tunnel under the East River in New York City, connecting the boroughs of Manhattan and Queens. The tunnel consists of a pair of tubes, each carrying two lanes.
With its 57 km, the Gotthard base tunnel is the longest railway tunnel in the world, and the core of the new transalpine railway axis AlpTransit. The twin single track high speed rail tunnels run between Erstfeld and Bodio in Switzerland.
In terms of underwater tunnels in general, though, the top honor goes to the Channel Tunnel, which connects England and France by rail. Its submerged portion runs for 37.9 kilometers, the longest of any underwater tunnel in the world.
The island of Manhattan is connected to the rest of the world through 21 bridges and 15 tunnels. The bridges range in complexity from the comparatively simple Harlem River swing bridges to the grandeur of the Brooklyn Bridge and cover a hundred years of bridge construction technology and social change.
Commonhall Lane beneath the GuildhallThe most well-preserved of all York's underground passageways, Commonhall Lane, sits beneath York Guildhall. It's a medieval passageway that runs on the line of an old Roman road which ran from the legionary fortress across the river Ouse.
The longest tunnel in the U.S., the Delaware Aqueduct, was constructed to transport water – not vehicles – to the city of New York. In some parts of the 85-mile tunnel, its depth runs 2,500 feet below the surface and the maximum diameter reaches 19.5 feet.