Interstate 78 (I-78) is a part of the Interstate Highway System that runs from Union Township, Lebanon County, Pennsylvania, to New York City. The portion of I-78 within the U.S. state of New York is just 0.90 miles (1.45 km) long as it crosses the Hudson River from New Jersey via the Holland Tunnel and ends at the exit rotary in Lower Manhattan. Therefore the entire route is maintained by the Port Authority of New York and New Jersey.