- Southern Terminus:
- New Jersey-Pennsylvania state line
- Northern Terminus:
- George Washington Bridge at the New York-New Jersey state line
- 66.06 miles
- Mercer, Middlesex, Union, Essex, Hudson, Bergen
US 1 is a major route running from Key West in Florida to the Canadian border in Maine. Prior to the construction of I-95, it was the main route along the East Coast. It crosses the Delaware River from Pennsylvania into New Jersey in Trenton. The first section is a short limited-access highway called the Trenton Freeway. This highway ends after a short distance and becomes Brunswick Pike, a large divided road with a combination of traffic lights and overpasses. US 1 runs northeast to New Brunswick and then north, parallel to the New Jersey Turnpike (I-95). In Woodbridge, US 1 merges with US 9. The two routes are multiplexed from this point all the way into New York. In Newark, US 1/US 9 curves to east. A long bridge known as the Pulaski Skyway crosses the Passaic River and the Hackensack River to Jersey City. On the other side, US 1/US 9 turns north and follows Tonnele Avenue, Bergen Turnpike, and Broad Avenue. In Fort Lee, US 1/US 9 merges with the New Jersey Turnpike (I-95). The three routes are multiplexed across the George Washington Bridge to New York.