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Nevada County
Ancho Erie Mine Road Bridge [Map] Timber stringer bridge over Poorman Creek Tributary Ravine on Ancho Erie Mine RoadOpen to trafficBuilt pre-1900 (bridge is resemblant of Gold Rush era timber stringer bridges), restricted to motorcycles and pedestrians only due to deteriorating condition 2011, repaired and reopened 2013
Bridgeport Covered Bridge 05-29-01 [Map · Street View] Covered bridge over South Fork Yuba River on Pleasant Valley Road in South Yuba State ParkClosed to all traffic as of October 21, 2011Built 1862 by the Virginia Turnpike Co.; closed to traffic in 1973
Eagle Bird Mine Bridge [Map] Lost Bridge over South Yuba River on Maybert Road/Eagle Bird Mine RoadDestroyedBuilt circa 1880, destroyed unknown year. Very little is known about this bridge, and only a pier still stands.
Gault Bridge [Map · Street View] Steel arch bridge over Deer Creek on South Pine Street in Nevada CityOpen to trafficBuilt 1903, replaced with replica in 1996
Humbug Creek Bridge [Map] Timber stringer bridge over Humbug Creek on Relief Hill RoadOpen to trafficBuilt 1952
Maybert Road Bridge [Map] Pratt Pony truss bridge over Canyon Creek on Maybert RoadIn process of being relocated to Nevada City for pedestrians.Built 1895; replaced 2017
Old Spenceville Bridge [Map] Lost Bridge over Dry Creek on Spenceville RoadDestroyed, possibly by flood. Only pier foundations and concrete chunks remain.Built unknown year, destroyed circa 1920.
Plumbago Road Bridge [Map] Warren pony truss bridge over Middle Fork Yuba River on Plumbago RdOpen to trafficBuilt 1935
Poorman Creek Bridge [Map] Steel stringer bridge over Poorman Creek on North Bloomfield Graniteville RdOpen to trafficBuilt 1930
SP - Summit Tunnels 6, 7, and 8 [Map · Street View] Abandoned tunnels on former Central Pacific (later SP) RailroadAbandonedBuilt by the Central Pacific Railway as part of the original transcontinental railway to finally cross the Sierra's at Donner Pass; Track 1 abandoned in 1996
Spenceville Bridge [Map] Concrete closed-spandrel deck arch bridge over Dry Creek on Spenceville RoadOpen to pedestrians as part of trail. May be crossed by authorized vehicles.Built 1920, converted to pedestrian use unknown year.
Tyler-Foote Crossing Bridge [Map] Deck plate girder bridge over Middle Fork Yuba River on Tyler Foote Crossing RoadOpen to trafficDeck plate girder bridge replacement bridge on historic route
UP - Iceland Bridge [Map] Camelback through truss bridge over Truckee River on Union Pacific RailroadOpen to trafficBuilt 1907 by the American Bridge Co.