Brooklyn Battery Tunnel
Logo of the Brooklyn–Battery Tunnel
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| Overview | |
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| Official name | Hugh L. Carey Tunnel |
| Location | Brooklyn–Manhattan, New York City, New York, United States |
| Coordinates | 40°41′45″N 74°00′49″W / 40.695833°N 74.013611°W |
| Route |
 I-478
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| Crosses | East River |
| Operation | |
| Opened | May 25, 1950 |
| Operator | MTA Bridges and Tunnels |
| Traffic | 45,337 (2010) |
| Toll | As of March 19, 2017, $8.50 (Tolls by Mail); $5.76 (New York E-ZPass) |
| Technical | |
| Length | 9,117 feet (2,779 m) |
| No. of lanes | 4 |
| Tunnel clearance | 12 feet 1 inch (3.68 m) |
| Route map | |
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| Route information | ||||
| Maintained by MTA Bridges and Tunnels | ||||
| Length: | 2.14 mi (3.44 km) | |||
| Existed: | 1971 – present | |||
| Major junctions | ||||
| South end: |
 I-278 in Brooklyn
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| North end: |
 NY 9A in Manhattan
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| Highway system | ||||
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→The Brooklyn–Battery Tunnel, officially known as (but not usually called by locals) the Hugh L. Carey Tunnel, is a toll road in New York City that crosses under the East River at its mouth, connecting Brooklyn with Manhattan. The tunnel nearly passes underneath Governors Island, but does not provide vehicular access to the island. It consists of twin tubes, carrying four traffic lanes, and at 9,117 feet (2,779 m) is the longest continuous underwater vehicular tunnel in North America. It was opened to traffic in 1950 and currently carries the Interstate 478 (I-478) designation; formerly, it was New York State Route 27A (NY 27A). The tunnel was officially renamed after former New York Governor Hugh Carey in 2010.
The tunnel extends from the southern tip of Manhattan to Brooklyn's Red Hook neighborhood. The Battery in the tunnel's name refers to the southernmost tip of Manhattan, site of an artillery battery during the earliest days of New York City. The tunnel is owned by the City of New York and operated by MTA Bridges and Tunnels, an affiliate agency of the Metropolitan Transportation Authority. It has a total of four ventilation buildings: two in Manhattan, one in Brooklyn, and one on Governors Island that can completely change the air inside the tunnel every 90 seconds.
The tunnel carries 26 express bus routes that connect Manhattan with Brooklyn or Staten Island. They are the BM1, BM2, BM3, and BM4 operated by the MTA Bus Company, and the X1, X2, X3, X4, X5, X7, X8, X9, X10, X11, X12, X14, X15, X17A, X17C, X19, X27, X28, X31, X37, X38, and X42, operated by MTA New York City Transit.
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