Atlantic Avenue Tunnel
Cobble Hill, Brooklyn

Underground in the Atlantic Avenue Tunnel

Atlantic Ave & Court St, Brooklyn, NY 11201


Saturday Dec 11, 2010

Sunday Dec 12, 2010

Atlantic Avenue Tunnel (Cobble Hill, Brooklyn)
Underground in the Atlantic Avenue Tunnel
Atlantic Ave & Court St, Brooklyn, NY 11201

Official Link:

The Atlantic Avenue Tunnel is officially the world's oldest subway tunnel. This tunnel was built in 1844 beneath a busy street in the City of Brooklyn (Brooklyn did not become part of NYC until a half-century later). The Atlantic Avenue Tunnel is a half-mile long and accommodated two standard gauge railroad tracks.

The Atlantic Avenue Tunnel was built in only seven months, using the cut-and-cover method; only hand tools and primitive equipment was utilized in its construction. It was built to provide grade separation for early Long Island Rail Road trains that lacked brakes good enough to operate on city streets. The tunnel was built to attain grade separation for the previously existing LIRR route on the surface of Atlantic Avenue. The tunnel eliminated vehicular and pedestrian traffic conflicts and delays.

Bob Diamond rediscovered the long forgotten Atlantic Avenue Tunnel in 1980. The Brooklyn Historic Railway Association (BHRA) was formed in 1982 to preserve, publicize and provide public access to the historic tunnel. BHRA successfully filed and received historic designations. BHRA continues to maintain and conduct tours and events within the Atlantic Avenue Tunnel.

The tunnel is located within both the Brooklyn Heights and Cobble Hill Historic Districts, and within a U.S. Historic District. The Atlantic Avenue tunnel is a landmarked and protected historic site.

Please Note: You enter the Atlantic Avenue Tunnel via a ladder through a manhole in the middle of Atlantic Avenue. Traffic is blocked off, but you should definitely wear comfortable shoes and those who are incapable of climbing up and down a 10 feet ladder should not plan on attending the event. We apologize for this, but there is absolutely no other way to enter or exit the tunnel. There are no chairs in the tunnel. We will put down tarps to sit on, and you are also welcome to bring small cushions (nothing too big, please). You must sign a liability waiver before entering the tunnel (forms will be available at the entrance). There are no bathrooms in the tunnel. You should use a restroom before you enter.


Take the 2,3, 4 or 5 to Borough Hall or the F to Bergen

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Rooftop Films is a New York based non-profit whose mission is to engage diverse communities by showing independent movies in outdoor locations, producing new films, coordinating youth media education, and renting equipment at low cost to artists.

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