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
Virginia State Route 51 as a four-lane undivided highway that passes through the city's residential Westover Hills area. SR 51 parallels the north side of US 58 Business as the former highway follows the height of land between the Dan River to the south and the Sandy River to the north. East of Piedmont Drive, the state highway enters a commercial area where the highway reaches its eastern terminus at US 58 Business (Riverside Drive) a short distance west of the confluence of the two rivers. Virginia State Route 51 State Route 51 (SR 51) is a primary state highway in the U.S. state