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Jefferson County
O'Fallon Park Road Bridge [Map] Lost pony truss bridge over Bear Creek on O'Fallon Park Road in EvergreenNo longer existsBuilt ca. 1940; replaced 2003
S. Kipling Street Bridge [Map] Lost pony truss bridge over Bear Creek on S. Kipling Street in DenverReplaced by a new bridgeBuilt 1935; rehabilitated 1988: replaced 2006
Sawmill Gulch BridgeLost open-spandrel arch bridge over Sawmill Gulch on CO 74Replaced by a new bridgeBuilt 1935; replaced 1999
Tunnel No. 1 [Map] Tunnel on US 6 west of GoldenOpen to two-lane trafficBuilt 1951
Tunnel No. 2 [Map] Tunnel on US 6 west of GoldenOpen to two-lane trafficBuilt 1941
Tunnel No. 3 [Map] Tunnel on US 6 west of GoldenOpen to two-lane trafficBuilt 1957