The Bridgeport Valley is a large, fertile mountain basin between the eastern Sierra Nevada and the Bodie Hills of the U.S. state of California. The valley is 10 miles (16 km) long and 7.5 miles (12.1 km) wide, and is used primarily for ranching. The East Walker River is the main stream flowing through the Bridgeport Valley; tributaries include Robinson and Swauger Creeks.