 In Forest County, PA 36 has a short overlap with U.S. Route 62, in the borough of Tionesta along the Allegheny River.In Venango County, PA 36 runs mostly northwest before reaching the northern terminus at PA 27 and PA 227 in Pleasantville.PA 36 was originally designated from Pleasant Valley Boulevard (U.S. Route 220) in Altoona to PA 66 in Clarion County.