How many tunnels go under the East River?

The East River Tunnel (ERT) consists of four tubes connecting New York City to destinations east, and is used by Amtrak, Long Island Rail Road (LIRR), and NJ TRANSIT trains.



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The Joralemon Street Tunnel (/d??'ræl?m?n/, ju-RAL-e-mun), originally the Brooklyn–Battery Tunnel, is a pair of tubes carrying the IRT Lexington Avenue Line (4 and ?5 trains) of the New York City Subway under the East River between Bowling Green Park in Manhattan and Brooklyn Heights in Brooklyn, New York City.

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Ultimately, they calculated that the tunnel would need to be 111 feet below the surface of the river. To be precise, it would be 135 feet below the surface on the Manhattan end and 147 feet below on the Long Island City end. Photograph of the unlined rock section of the tunnel.

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The New York City subway system has 16 subway tunnel connections underneath water bodies, if we're counting smaller gaps, like the Newtown Creek and Harlem River.

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There are subway lines that run under the water, via tunnels constructed through the ground beneath the water, but there are no lines running through the water. There are 14 underwater crossings the NYC subway does.

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Detroit-Windsor Tunnel It 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.

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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.

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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.

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Technically it's legal to swim in the East River, although it's also strictly forbidden to actually enter the river. Legalities aside, Mike Dulong, senior attorney for the New York water quality advocacy group Riverkeeper, claims that the East River isn't as unsanitary as the average New Yorker might assume.

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While some of NYC's old tunnels and stations seem to have been neglected for good, many are reused—like the abandoned tunnel below Central Park that became part of the Second Avenue subway—and repurposed, as graffiti canvases, art galleries, party spaces, or even a VIP entrance to one of New York's most luxurious ...

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The Oldest Subways in the World
  • London Underground History (1863) – the oldest tube line. ...
  • The Istanbul Tunnel (1875) ...
  • Chicago 'L' (1892) ...
  • Glasgow Circular Underground (1896) ...
  • Budapest's historic metro line (1896) ...
  • The Paris Metropolitain (1900) ...
  • The Berlin U-Bahn (1902) ...
  • New York, the subway that never closes (1904)


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The Twin Bores 15, 1968, and was completed five years later on Mar. 8, 1973. The Eisenhower Tunnel celebrates a big milestone of Connecting Colorado for 50 Years as of March 8, 2023. This bore was originally called the Straight Creek Tunnel, and later was officially named the Eisenhower Memorial Bore.

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In 1825, French engineer Marc Brunel started work on the Thames Tunnel, the very first underwater tunnel anywhere in the world. Beset by financial difficulties, frequent flooding and several deaths, the project wasn't completed until 1843.

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