Covered Bridge, Spanning Stanislaus River at Tulloch Mill, Knights Ferry, Stanislaus County, CA

See HABS No. CA-137 for drawings.
See HAER No. CA-314 for full historical report and additional photographs.
Supplemental material cites Schuylkill Bridge Company as builder but no sources have been found confirming that assertion.
Significance: The Knight's Ferry Bridge was built in 1863-64 to replace an 1857 uncovered wooden truss that was destroyed in a flood. This was an important crossing on the heavily traveled Stockton-Sonora Road during the California Gold Rush. The Knight's Ferry Bridge is the longest covered bridge west of the Mississippi River. See HAER No. CA-314 for additional information.
Survey number: HABS CA-158
Building/structure dates: 1863-1864 Initial Construction
Building/structure dates: 1885 Subsequent Work
Building/structure dates: 1918 Subsequent Work
Building/structure dates: 1988-1989 Subsequent Work