New York State Route 251

New York State Route 251
NY 251 highlighted in red
Route information
Maintained by NYSDOT
Length	17.79 mi[1] (28.63 km)
Existed	1930[2]–present
Major junctions
West end	NY 383 in Scottsville
Major intersections	I-390 in Rush NY 64 in Mendon
East end	NY 96 in Victor
Location
Country	United States
State	New York
Counties	Monroe, Ontario
Highway system
New York Highways Interstate US State Reference Parkways
← NY 250 → NY 252

New York State Route 251 (NY 251) is an east–west state highway in western New York in the United States. It extends for 17.79 miles (28.63 km) from an intersection with NY 383 in Scottsville, Monroe County, to an intersection with NY 96 in the town of Victor, Ontario County. NY 251 connects to Interstate 390 (I-390) in Rush and serves the village of Honeoye Falls (via NY 65) and the hamlet of Mendon within the town of the same name. The route, a two-lane, rural highway for much of its length, also intersects NY 15 and NY 64, two north–south highways leading to the Southern Tier and the Finger Lakes, respectively. Two sections of the route—from south of Scottsville to Rush and from Mendon to western Victor—follow linear east–west alignments. All but 3 miles (5 km) of the route are located in Monroe County.

From 1911 to 1921, the north–south section of modern NY 251 near Scottsville was part of Route 15, an unsigned legislative route assigned by the New York State Legislature. The first portion of what is now NY 251 to receive a posted designation was the segment east of NY 64 in Mendon, which was part of the signed NY 15 from 1924 to 1930. In the 1930 renumbering of state highways in New York, NY 251 was assigned to an alignment extending from Gates to Victor via Scottsville, utilizing modern NY 386 north of Scottsville and its current alignment east of the village. NY 251 was truncated to begin at NY 383 in Scottsville on July 1, 1977, at which time the former routing of NY 251 between Scottsville and Gates became part of an extended NY 386.