New York New Jersey Rail, LLC (reporting mark NYNJ) is a switching and terminal railroad that operates the only car float operation across Upper New York Bay between Jersey City, New Jersey and Brooklyn, New York. Since mid-November 2008, it has been owned by the Port Authority of New York and New Jersey, which acquired it for about $16 million as a step in a process that might see a Cross-Harbor Rail Tunnel completed. Since freight trains are not allowed in Amtrak's North River Tunnels, and the Poughkeepsie Bridge was closed in 1974, the ferry is the only freight crossing of the Hudson River south of the Alfred H. Smith Memorial Bridge, 140 miles (230 km) to the north of New York City (see Selkirk hurdle).