New York State Route 12A

New York State Route 12
Map of Upstate New York with NY 12 highlighted in red
Route information
Maintained by NYSDOT and the city of Watertown
Length:	222.27 mi (357.71 km)
Existed:	1924 – present
Major junctions
South end:	US 11 in Chenango
	NY 23 in Norwich US 20 in Sangerfield I-790 / NY 5 / NY 8 in Utica US 11 / NY 3 in Watertown I-81 in Orleans
North end:	NY 37 in Morristown
Location
Counties:	Broome, Chenango, Madison, Oneida, Lewis, Jefferson, St. Lawrence
Highway system
New York Highways Interstate U.S. State Reference Parkways ← NY 11C NY 12A →

New York State Route 12 (NY 12) is a state highway extending for 222.27 miles (357.71 km) through central and northern New York in the United States. The southern terminus of the route is at U.S. Route 11 (US 11) in the town of Chenango (just north of Binghamton) in the Southern Tier. The northern terminus is at NY 37 near the village of Morristown in the North Country. In between, the route serves three cities of varying size: Norwich, Utica, and Watertown. The distance between Utica and Binghamton is a major trucking route, and features many gas stations, truck stops, and fast food restaurants. Between Watertown and Morristown, it follows the St. Lawrence River valley.

It is a two lane, undivided, full access roadway for the majority of its length, except between the village of New Hartford and Alder Creek, where it is a four-lane highway. Within that span, it is a limited access highway in the city of Utica, referred locally as The Arterial and the North–South Arterial.

NY 12 intersects several primary east–west routes, including US 20, NY 5, and NY 3. From Barneveld to the town of Remsen (a distance of 11 miles or 18 kilometres), NY 12 overlaps NY 28. NY 12 also intersects US 11 twice: once at its beginning in Binghamton and once in Watertown. Between these intersections, NY 12 arcs eastward from US 11, with the stretch right after Utica being its eastern apex. NY 12 also connects with Interstate 81 (I-81) near both its beginning and end points in the same manner.