Idaho State Highway 51 February 2015, some map products such as Google Maps still show SH-51's former overlay with American Legion Blvd. SH-51's northern terminus is in the city of Mountain Home in Elmore County. After turning south from Airbase Rd. and the intersection with SH-67, the road crosses the Snake River into Owyhee County and passes through the towns of Bruneau, Grasmere, and Riddle. About from the state border it enters the Duck Valley Indian Reservation. As the road crosses into Nevada it becomes State Route 225. The reservation's only major town, Owyhee is about south of the state border. After another through
Texas State Highway 51 SH 51 was designated on January 29, 1974; its routing has remained unchanged. Texas State Highway 51 Texas State Highway 51 (SH 51) is a short state highway located entirely in Hansford County, Texas, just south of Spearman. SH 51 begins at SH 207 southeast of Spearman and travels east through unincorporated Hansford County approximately . It is a two-lane route for its entire length, and has no intersections with other state-maintained routes until its terminus at FM 281, which continues to the east and south, and FM 760, which travels north to Spearman. The original SH 51 was designated