north. The route utilized the routing of legislative Route 15 from Hornell to Dansville and from Mount Morris to Shakers Crossing, the modern junction of NY 63 and NY 408 northeast of Mount Morris. Between Dansville and Mount Morris, NY 36 followed its current alignment. Past Shakers Crossing, NY 36 continued northward through Geneseo to Avon on modern NY 63 and NY 39. The Geneseo–Avon segment of NY 36 became part of US 20 when that route was assigned in 1927. South of Hornell, what is now NY 36 from Hornell to Jasper became part of NY 17 when that route was assigned to most of legislative Route 4 in 1924. The remaining sections of contemporary NY 36—from Jasper to the Pennsylvania state line and north of Mount Morris—were state-maintained but unnumbered. In the 1930 renumbering of state highways in New York, the segment of modern NY 36 from Hornell south to the Pennsylvania state line became the southernmost portion of NY 21. At the same time, NY 36 was realigned north of Mount Morris to follow the path of former legislative Route 15 north through Caledonia to Mumford. Past Mumford, NY 36 continued north on its modern alignment to a new terminus at NY 3 (now NY 31) south of Adams Basin. In the early 1940s, NY 36 was extended south through Hornell and Almond to Andover, replacing part of NY 17F. The routings of NY 36 and NY 21 south of Hornell were swapped in the early 1950s, placing both routes on their current alignments south of the city. On June 8, 2017, Governor of New York Andrew Cuomo announced that they would upgrade the intersection of NY 531 and NY 36. This would improve the connection between NY 531 and NY 31 for safety purposes. Instead of the abrupt end at NY 36, a new road would be constructed to connect NY 531 and NY 31. NY 31 would be widened from Gallup Road to NY 531; a center median would be added and a portion of NY 31 between NY 531 and NY 36 would become a cul-de-sac for the residences in the area. NYSDOT projects that the job would be completed by the end of 2018. NY 36A NY 36A was an alternate route of NY 36 between Dansville and Mount Morris. The route began at NY 36 in Dansville and passed through Groveland on