How many water tunnels does NYC have?

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.



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George Washington Bridge connects upper Manhattan to Fort Lee New Jersey. Lincoln Tunnel connects midtown Manhattan to Weehawken New Jersey. Williamsburgh Bridge connects lower Manhattan and Brooklyn. Holland Tunnel connects lower Manhattan to New Jersey.

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Lincoln Tunnel connects midtown Manhattan to Weehawken New Jersey. Williamsburgh Bridge connects lower Manhattan and Brooklyn. Holland Tunnel connects lower Manhattan to New Jersey.

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The Brooklyn-Battery Tunnel is the longest tunnel in New York. The Brooklyn-Battery Tunnel is the longest tunnel in New York. It is a marvel of engineering, stretching an impressive 9,117 feet beneath the bustling streets of New York City.

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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.

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But why does New York City have so many hidden tunnels? There are a variety of reasons. Some are old subway tunnels or stations no longer in use, some were designed for freight trains passing through the city.

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Construction began nearly 40 years ago and was guided through several administrations changes. Today, the tunnel runs more than 60 miles in length, spanning from the Hillview Reservoir in Yonkers, through the Bronx, Manhattan, and across the East River into Brooklyn and Queens.

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The Brooklyn–Battery Tunnel, officially the Hugh L. Carey Tunnel and commonly referred to as the Battery Tunnel or Battery Park Tunnel, is a tolled tunnel in New York City that connects Red Hook in Brooklyn with the Battery in Manhattan.

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Necessary repairs and permanent resiliency improvements are being implemented at the Holland Tunnel as part of the Holland Tunnel Sandy Repairs and Resiliency Improvements project. To accommodate this work, overnight closures will be required, Sunday through Friday, until the end of 2025.

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