| Name | Location | Status | Design | Year Built | Year Lost | Span Length | Total Length |
|---|---|---|---|---|---|---|---|
| Old Kipling Street Bridge | Old Kipling Street over Bear Creek | Open to traffic | Pony truss | 1935 | -- | 74.1 ft. | 77.0 ft. |
| Park Avenue Bridge | Park Avenue over Bear Creek | Open to traffic | Pratt pony truss | 1926 | -- | 47.9 ft. | 51.8 ft. |
| Sawmill Gulch Bridge | CO 74 over Sawmill Gulch | Replaced by a new bridge | Open-spandrel arch | 1935 | 1999 | 88.9 ft. | 150.9 ft. |
| Tunnel No. 1 | US 6 under a rock formation | Open to two-lane traffic | Tunnel | 1951 | -- | -- | 882.6 ft. |
| Tunnel No. 2 | US 6 under a rock formation | Open to two-lane traffic | Tunnel | 1941 | -- | -- | 1067.6 ft. |
| Tunnel No. 3 | US 6 under a rock formation | Open to two-lane traffic | Tunnel | 1957 | -- | -- | 768.8 ft. |