U.S. Route 15 in New York

U.S. Route 15
Map of New York with US 15 highlighted in red
Route information
Maintained by NYSDOT
Length:	12.68 mi (20.41 km)
Existed:	April 1939 – present
Major junctions
South end:	US 15 at the Pennsylvania state line in Lindley
North end:	I-86 / NY 17 near Painted Post
Location
Counties:	Steuben
Highway system
United States Numbered Highway System List Special Divided Replaced New York Highways Interstate U.S. State Reference Parkways ← NY 14A NY 15 →

U.S. Route 15 (US 15) is a part of the U.S. Highway System that runs from Walterboro, South Carolina, to Painted Post, New York. In the U.S. state of New York, US 15 extends 12.68 miles (20.41 km) through the Southern Tier from the Pennsylvania state line at Lindley north to an interchange with the Southern Tier Expressway (Interstate 86 and New York State Route 17) just outside Painted Post. US 15 originally continued north to Rochester before being truncated to its present northern terminus. All of US 15 in New York was designated as I-99 on June 27, 2014.

US 15 enters New York adjacent to the state line borough of Lawrenceville, Pennsylvania, at which point the northern segment of I-99 begins. A four-lane freeway through the Steuben County town of Lindley, US 15 crosses through a rock cut, making a large bend to the north and bypassing the hamlet of Presho. I-99/US 15 enters a partial cloverleaf interchange with CR 5 (Smith Road). After CR 5, US 15 bent northeast through the town of Erwin, running to the west of the Indian Hills Golf Club. Making a gradual bend further to the northeast, the freeway crosses the Canisteo River and enters the hamlet of Erwin, where it enters a diamond interchange with NY 417 (Addison Road). After NY 417, US 15 makes a bend alongside Norfolk Southern Railroad's Southern Tier Line (former Erie Railroad main line). Now paralleling the tracks and NY 417, US 15 crossed through Erwin, entering exit 3, which connects to NY 417 once again, next to Gang Mills Yard, the site of the former Painted Post station.