The Byrne's Ferry bridge was a historic cantilevered covered bridge across the Stanislaus River between Calaveras County and Tuolumne County, California. Originally built during the California Gold Rush, the bridge was located on the O'Byrne's Ferry road between Chinese Camp and Copperopolis. Until the mid-20th century, it was one of the last remaining covered bridges in the state; the bridge was destroyed in 1957 (after an unsuccessful attempt to move it) to make way for the construction of Tulloch Dam.