New York State Route 436

New York State Route 436
Map of western New York with NY 436 highlighted in red
Route information
Maintained by NYSDOT and Wyoming County
Length	23.80 mi[1] (38.30 km)
Existed	August 1971[2]–present
Major junctions
West end	NY 39 in Pike
Major intersections	NY 408 in Nunda
East end	NY 36 in Dansville
Location
Country	United States
State	New York
Counties	Wyoming, Livingston
Highway system
New York Highways Interstate US State Reference Parkways
← NY 434 → NY 437

New York State Route 436 (NY 436) is an east–west state highway located in the western portion of New York in the United States. It extends for 23.80 miles (38.30 km) from an intersection with NY 39 in the Pike hamlet of Lamont to a junction with NY 36 in the village of Dansville. In between, the route passes through Letchworth State Park near its southern tip and serves the village of Nunda, where it meets NY 408. NY 436 also passes through the hamlet of Portageville, located at the southern end of Letchworth State Park on NY 19A, which NY 436 overlaps north of the community. Most of NY 436 is a two-lane highway that traverses largely rural areas of Wyoming and Livingston counties.

The portion of NY 436 between Portageville and Nunda was originally part of Route 43, an unsigned legislative route, during the 1910s and 1920s. In the 1930 renumbering of state highways in New York, all of modern NY 436 east of Portageville became part of NY 39, which initially went east from the now-hamlet of Pike to Dansville. NY 39 was replaced east of Pike with NY 245 c. 1940 after the alignments of the two routes were mostly swapped. NY 245 was truncated to begin in Naples in August 1971, at which time the Pike–Dansville segment of its former routing became NY 436. The westernmost piece of NY 436 was altered in the mid-1970s to use NY 19A and a Wyoming County-maintained road to reach NY 39.