Coordinates: 38°48′41″N 120°07′27″W / 38.81139°N 120.12417°W / 38.81139; -120.12417. Twin Bridges is a small unincorporated community on U.S. Route 50 near the Desolation Wilderness in El Dorado County, California. It is located 5 miles (8 km) west of Echo Summit, at an elevation of 6115 feet (1864 m).