Direction:

North/South

Southern Terminus:

Pennsylvania-New York state line

Northern Terminus:

United States-Canada border

Distance:

183.62 miles

Counties:

Broome, Cortland, Onondaga, Oswego, Jefferson

Signed:

Yes

I-81 is a north/south interstate extending from Tennessee to the Canadian border in New York. It enters New York from Pennsylvania just south of Binghamton. After a few miles, it merges with NY 17/Future I-86 east for a few exits and then splits off again. It runs north to Syracuse, where it has an interchange with the New York Thruway (I-90). It continues north to Watertown and then to the St. Lawrence River at the Thousand Islands, where it crosses into Canada.