Idaho State Highway 51 Idaho State Highway 51 State Highway 51 (SH-51) is a state highway in southwestern Idaho from Mountain Home south to the Nevada border, where it continues as State Route 225 to Elko. It is the major north–south road in Owyhee County. As currently configured in the state's official milepoint log, SH-51 terminates at the BL-84 intersection with American Legion Blvd., and is not otherwise officially concurrent/overlaid with BL-84 (where the signs at I-84's Exits 90 and 99 say "To SH-51/To SH-67") or the former section of US-20 that follows American Legion Blvd. to I-84/US-20 east at Exit 95. As of
New York State Route 51 in the mid-1960s. New York State Route 51 New York State Route 51 (NY 51) is a state highway in the central part of New York state. The highway runs generally in a southwest to northeast direction from the hamlet of Mount Upton to the village of Ilion. NY 51 is a two-lane highway its entire length. As NY 51 approaches the northern border of Otsego County, it makes a sharp left before descending to US 20 to the west in West Winfield. A concurrency carries it back to the original path where it again heads northward. Then, at Cedarville,