Alpine Tunnel Abandoned tunnel under the Continental Divide on the Denver, South Park & Pacific Railroad, southwest of St. Elmo Abandoned and partially caved-in Built 1880-82 by the Denver, South Park & Pacific Railroad; collapsed and abandoned in 1910
Gunnison River Bridges Pair of through trusses over the Gunnison River on Old US 50 just west of Gunnison Open to traffic Built 1927; replacement bridges built on new alignment in 1957
Quartz Creek Bridge Wooden pony arch bridge over Quartz Creek on CR 76 Open to traffic Built 1990