Miner Street Bridge[Map · Street View] Reconstructed pony truss bridge over Clear Creek on Miner Street in Idaho Springs Open to traffic Built 1902 by Kuyes and Work. Reconstructed 1990 (the trusses are no longer load-bearing).
Tunnel No. 4[Map · Street View] Abandoned tunnel on CO 119 near the junction with US 6 Still intact, but boarded up after the roads were realigned to make this tunnel unnecessary Built 1939
US 6/40 Idaho Springs Bridge[Map · Street View] Steel stringer bridge over Clear Creek on CR 314 (former US 6 and US 40) Open to traffic Built 1936; US 6/40 rerounted onto I-70 in 1961; used briefly to carry EB I-70 during tunnel reconstruction 2015; repurposed to access trailhead parking