Echo Summit
Twin Bridges is a small unincorporated community on U.S. Route 50 near the Desolation Wilderness in El Dorado County, California. It is located west of Echo Summit, at an elevation of . It has a population of 14 people according to census figures, however, as of 2008 the road sign lists the population at 10. Right after the town, the U.S. 50 eastbound starts a steep ascent to Echo Summit passing Sierra-at-Tahoe ski resort shortly before the summit.