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.
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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 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.
“The first infrastructures of this type were built at the end of the 19th century, and at present there are nearly 200underwater tunnels built worldwide. Although some are used for water and electricity supply, most are used to house road or rail connections.
Detroit-Windsor TunnelIt is the third oldest underwater vehicle tunnel in the United States or Canada. It stands behind only New York/New Jersey's Hudson River-crossing Holland Tunnel (completed in 1927) and the Posey Tube (completed in 1928), which connects Alameda and Oakland, California.
Carey Tunnel (formerly Brooklyn-Battery Tunnel) opened in 1950, it was the longest continuous underwater vehicular tunnel in North America. It still is.
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.
From the Hillview reservoir water flows by gravity to three tunnels under New York City. Water rises again to the surface under natural pressure, through a number of shafts. The three tunnels are: New York City Water Tunnel No.
Workers used dynamite, drills and circular cutting shields that were hydraulically shoved through the riverbed at each end until they met in the middle. Workers assembled cast-iron rings behind the shields as they inched forward, and jacks shoved the rings in place as the tubes' lining.
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.
Drainage systems: Tunnels have an extensive network of drainage systems in place. This includes channels, pipes, and pumps that collect and redirect rainwater away from the tunnel. The drainage systems are designed to handle the anticipated volume of water during heavy rainfall events.
Also known as the Cobble Hill tunnel, the half-mile Atlantic Avenue tunnel is not only the oldest subway tunnel in NYC but also the world. Running beneath Brooklyn's Atlantic Avenue, it was first built in 1844 and was sealed off in 1861.