Alexander Valley Rd, old bridge [Map] Concrete stringer bridge over Russian River tributary on Private drive, formerly Alexander Valley RoadOpen to trafficBuilt 1920, obsolete, by road realignment for new bridge, 1949
Conde Lane Bridge [Map] Concrete arch bridge over Windsor Creek on Conde Lane in WindsorOpen to trafficBuilt 1995 Crocker Road Bridge [Map · Street View] Steel Warren Pony truss bridge over Russian River on Crocker Road in CloverdaleOpen to trafficBuilt 1938, rehabilitated, unknown year
Drake Road Bridge [Map] Wooden bridge over Side Hill Viaduct on Drake Road in GuernevilleOpen to trafficBuilt 1930
Eagle Nest Lane Bridge [Map] Wooden bridge over Hillside on Eagle Nest Lane in GuernevilleOpen to traffic, no historical elements visibleBuilt 1930
Great Heron Drive Bridge [Map] Closed spandrel Concrete arch bridge over Sky Hawk Creek on Great Heron Drive in Santa RosaOpen to trafficBuilt 1995 Haupt Creek Bridge [Map · Street View] Pinned Pratt through truss bridge over Haupt Creek on Stewart Point Skagg Springs RoadOpen to trafficBuilt 1909, relocated 1937 to this location
Hauser Bridge [Map · Street View] Bailey Deck truss bridge over South Fork Gualala River on Hauser Br RoadOpen to trafficBuilt 1947; rehabilitated 1954
Memory Lane Bridge [Map] Wooden bridge over Hillside on Memory Lane in GuernevilleOpen to trafficBuilt 1930
NWP - Petaluma River Bridge [Map · Street View] Warren through truss bridge over Petaluma River on Northwestern and Pacific RailroadOpen to low emission locomotives and cars carrying animal feed and lumber up north four to five times a week.
NWP - Wingo Lift Bridge [Map] Pony/through plate girder bridge over Slough feeding San Pablo Bay on Northwestern Pacific Railroad (NWP)Open to trafficBuilt 1920 by the Toledo Bridge & Crane Co
Odd Fellows Park Road [Map] Steel stringer bridge over Russian River on Odd Fellows Park RoadOpen to trafficBuilt 1977; rehabilitated 2008 Pena Creek Bridge [Map] Concrete tee beam bridge over Pena Creek on West Dry Creek RoadOpen to trafficBuilt 1924
Porter Creek Road Bridge [Map] Concrete deck girder bridge over Porter Creek on Porter Creek Road/Calistoga RoadReplaced by a new bridge
Russian River Bridge [Map · Street View] Pony truss bridge over Russian River on CA 128Replaced by new bridgeBuilt 1932; rehabilitated 1972, flood damage 2006, replaced, 2006 Russian River Bridge [Map · Street View] Pratt Through truss bridge over Russian River on CA 116 in GuernevillePedestrian only, replaced by new bridge 1998Built 1922; replaced 1998
South Fork Gualala River Bridge [Map · Street View] Lost Pratt deck truss bridge over South Fork Gualala River on Stewart's Point Skagg Springs RoadReplaced by new bridgeCurrent bridge installed 1984, likely multiple previous bridges at this location
Steamboat Slough Swing Bridge [Map] Lost Through truss bridge over Steamboat Slough on San Francisco and Napa Railroad/Southern Pacific RailroadDestroyed by fireBuilt 1905 by the San Francisco and Napa Valley RR (later Southern Pacific), abandoned 1933, destroyed by fire in mid 1950s
Summer Crossing Bridge [Map] Steel stringer bridge over Russian River on Vacation Beach RoadOpen to trafficBuilt 1977, seasonal, removed in winter.