Nevada State Route 773State Route 773 is a state highway in Esmeralda County, Nevada, United States. Known as Fish Lake Valley Road, the highway was a part of former SR 3A.Route descriptionSR 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, about west of Coaldale.HistoryThe highway originally composed the northern of State Route 3A, a route christened in 1933 to connect State Route 15 to Fish Lake Valley and Dyer. SR 3A was replaced by State Route 773 and State Route 264 on July 1, 1976. SR 773 did not appear on state highway maps until 1991.Major intersectionss on the highway are a continuation of State Route 264 mileposts.