Brooklyn–Battery Tunnel Manhattan and Staten Island, and the X27, X28, X37, and X38 between Manhattan and Brooklyn. A vehicular tunnel under the East River between Manhattan and Brooklyn was proposed by the New York Board of Trade and Transportation in 1925, in response to growing truck traffic congestion in Lower Manhattan. The tunnel would have been located between the Manhattan Bridge and the Brooklyn Bridge. A tunnel that specifically connected the Battery in Manhattan with Red Hook in Brooklyn, passing underneath the East River and Governors Island south of both the Manhattan and Brooklyn Bridges, was first proposed by Brooklyn Borough president
Third Avenue (Brooklyn) Third Avenue (Brooklyn) Third Avenue is a street in the New York City borough of Brooklyn. It runs parallel to Fourth Avenue for most of its length, and it also runs under the Gowanus Expressway from the Prospect Expressway to 65th Street. It has been mostly industrial for most of its existence, though the stretch of Third Avenue from Prospect Expressway to Downtown Brooklyn has recently undergone gentrification. The Third Avenue streetcar line formerly ran on Third Avenue from Fort Hamilton to the Brooklyn Bridge. The Fifth Avenue elevated line ran above Third Avenue in Sunset Park and Bay Ridge.