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 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 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. Route description Portageville area NY 436 begins at an intersection with NY 39 in Lamont, a hamlet within the town of Pike in Wyoming County. It initially heads eastward on Denton Corners Road, overlapping with County Route 38 (CR 38) as it traverses a mixture of open fields and farmland and enters the town of Genesee Falls. After , NY 436 intersects NY 19A at a four-way intersection. While CR 38 continues eastward into Letchworth State Park, NY 436 turns to the south, initially following NY 19A around the southwestern tip of the park. Both routes eventually enter the park, however, as they approach the hamlet of Portageville, a community situated at the park's southern end. At this point, the mostly east–west NY 436 leaves the predominantly north–south NY 19A, allowing the latter to take the southern path out of town and parallel the Genesee River as it travels southward. NY 436, meanwhile,