Interstate 78 in New Jersey Interstate 78 in New Jersey Interstate 78 (I-78) is an east–west route stretching from Union Township, Lebanon County, Pennsylvania to New York City. In New Jersey, I-78 is called the Phillipsburg–Newark Expressway and the Newark Bay Extension of the New Jersey Turnpike. The highway runs for in the northern part of the state of New Jersey from the Interstate 78 Toll Bridge over the Delaware River at the Pennsylvania state line in Phillipsburg, Warren County east to the Holland Tunnel under the Hudson River at the New York state line in Jersey City, Hudson County. The Phillipsburg-Newark Expressway portion of
Union City, New Jersey the New Jersey Meadowlands. The city is bisected by New Jersey Route 495, a vehicular cut built in conjunction with the Lincoln Tunnel. Soon after its construction, many street names were abandoned in favor of numbering in most of North Hudson starting at 2nd Street, just north of Paterson Plank Road, which runs through the city's only major park and creates its border with Jersey City. 49th Street is the northern boundary with West New York. Apart from a small section between Bergen Turnpike and Weehawken Cemetery, Kennedy Boulevard, a major north-south thoroughfare, creates the western border with North Bergen.