The Cross-Harbor Rail Tunnel (also known as the Cross Harbor Rail Freight Tunnel) is a proposed freight rail transport tunnel under Upper New York Bay in the Port of New York and New Jersey between northeastern New Jersey and Long Island, including southern and eastern New York City.
In November 2014, the Port Authority of New York and New Jersey released a Tier 1 Draft Environmental Impact Statement (DEIS) for its Cross Harbor Freight Program. It reviewed four waterborne and four tunnel alternatives. Estimated costs for the waterborne alternatives ranged from $95 to 190 million, and from $7 to 11 billion for the tunnel alternatives. On September 25, 2015 the Tier 1 Final Environmental Impact Statement was released, which narrowed the alternatives to two, an enhanced railcar float operation and a basic rail tunnel, both between New Jersey and Brooklyn. A phased plan starting with building the enhanced car float was proposed.
Direct connections for rail freight between Long Island and nearby areas of the United States have long been limited. At present, freight trains from the west and south destined for New York City (except for Staten Island, via the Arthur Kill Vertical Lift Bridge), Long Island and Connecticut must cross the Hudson River using the Alfred H. Smith Memorial Bridge which is 140 miles (225 km) north of New York City at Selkirk, New York, making a 280-mile (451 km) detour known as the "Selkirk hurdle." Partly as a result, less than 3% by weight of the area's freight is said to move by rail. The former Pennsylvania Railroad planned a freight railroad tunnel between Brooklyn and Staten Island in 1893, but the project was never carried out. Attempts by government planners to revive the project from the 1920s through the 1940s did not succeed. The Pennsylvania Tunnel and Terminal Railroad tunnels through New York Penn Station, generally used only for passenger trains, were used briefly for freight during World War I to relieve congestion at the barge transport docks but today's passenger and commuter traffic frequencies are at capacity and preclude freight movements. Proposals for a cross-harbor tunnel were floated as early as the 1920s.