Palisades Interstate Parkway  The Palisades Interstate Parkway (PIP) is a limited-access highway in the U.S. states of New Jersey and New York. The parkway is a major commuter route into New York City from Rockland and Orange counties in New York and Bergen County in New Jersey. The southern terminus of the route is at the George Washington Bridge in Fort Lee, New Jersey, where it connects to Interstate 95 (I-95), Route 4 and US 46. Its northern terminus is at a traffic circle in Fort Montgomery, New York, where the PIP meets US 9W and US 202 at the Bear Mountain Bridge. At exit 18, the PIP forms a concurrency with US 6 for the remaining duration of its run. The route is named for the New Jersey Palisades, a line of cliffs rising along the western side of the Hudson River. The PIP is designated, but not signed as Route 445 in New Jersey and New York State Route 987C (NY 987C), an unsigned reference route, in New York. As with most parkways in the New York metropolitan area, commercial traffic is prohibited from using the PIP. The Palisades Interstate Parkway was built from 1947–1958, and fully opened to traffic on August 28, 1958. The mainline of the parkway is designated as Route 445 in New Jersey and NY 987C in New York. The latter is one of New York's reference routes. A spur connecting the parkway to US 9W in Fort Lee, New Jersey, is designated Route 445S. All three designations are unsigned and used only for inventory purposes. The parkway is owned and maintained by the Palisades Interstate Park Commission but occasional maintenance is performed by the New Jersey and New York state departments of transportation. Commercial vehicles are prohibited on the entire length of the Palisades Interstate Parkway. The speed limit on the highway used to be south of the New York State Thruway and north of it. As of October 2018, it is 55 mph for the entire length. The Palisades Interstate Parkway begins at the George Washington Bridge (GWB) in Fort Lee, New Jersey. Passengers from the upper level of the GWB can directly get on the PIP northbound, while passengers from the lower level of the bridge must travel through GWB Plaza on US 9W before getting on the parkway. Passengers riding northbound on the New Jersey Turnpike (I-95) must be in local lanes to directly get on the PIP.