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Custer County
Big Lost River Bridge [Map] Lost through truss bridge over Big Lost River on 3800Replaced by a new bridgeBuilt 1920; replaced 2007 Big Lost River Bridge [Map] Lost through truss bridge over Big Lost River on 3700Replaced by a new bridgeBuilt 1915; replaced 2010 Big Lost River Bridge [Map] Through truss bridge over Big Lost River on Old Chilly Road (Old Chilly Rd)Open to trafficBuilt 1918
Salmon River Bridge [Map] Through truss bridge over Salmon River on Ellis Branch RoadIntact but closed to all trafficBuilt 1930