sentences:  SR 773 begins at a junction with State Route 264 north of Fish Lake Valley.The route follows Fish Lake Valley Road northeast to its terminus at U.S. Route 6 (US 6) about west of Coaldale.The highway originally composed the northern of State Route 3A, a route christened in 1933 to connect State Route 15 (now US 6) to Fish Lake Valley and Dyer.