| Name | Location | Status | Design | Year Built | Year Lost | Span Length | Total Length |
|---|---|---|---|---|---|---|---|
| Beaverhead River Bridge | CR 004 over Beaverhead River | No longer exists | Through truss | 1908 | 1995 | 96.1 ft. | 98.1 ft. |
| Beaverhead River Bridge | CR 279 over Beaverhead River | Open to traffic | Pony truss | 1920 | -- | 71.5 ft. | 142.7 ft. |
| Beaverhead River Bridge | CR 316 over Beaverhead River | Open to traffic | Pony truss | 1930 | -- | 100.1 ft. | 100.1 ft. |
| Big Hole River Bridge | CR 012 over Big Hole River | Open to traffic | Pony truss | 1999 | -- | 83.7 ft. | 95.1 ft. |
| Big Hole River Bridge | CR 085 over Big Hole River | Open to traffic | Pony truss | 1925 | -- | 100.1 ft. | 100.1 ft. |
| Big Hole River Bridge | CR 210 over Big Hole River | No longer exists | Through truss | 1892 | 2000 | 128.0 ft. | 128.9 ft. |
| Big Hole River Bridge | Frontage Road 001 over Big Hole River | Open to traffic | Through truss | 1940 | -- | 148.0 ft. | 232.0 ft. |
| Bridge Closed Bridge | Bridge over Red Rock River | Closed to all traffic | Pony truss | 1909 | -- | 64.0 ft. | 64.0 ft. |
| Horse Prairie Creek Bridge | CR 111 over Horse Prairie Creek | Open to traffic | Pony truss | 1920 | -- | 54.1 ft. | 54.1 ft. |
| Red Rock River Bridge | CR 239 over Red Rock River | Closed to all traffic | Pony truss | 1913 | -- | 75.1 ft. | 75.1 ft. |
| Red Rock River Bridge | CR 266 over Red Rock River | Open to traffic | Pony truss | 1915 | -- | 56.1 ft. | 56.1 ft. |
| Red Rock River Bridge | CR 269 over Red Rock River | Open to traffic | Pony truss | 1920 | -- | 96.1 ft. | 98.1 ft. |
| West Bench Canal Bridge | CR 028 over West Bench Canal | Open to traffic | Pony truss | 1909 | -- | 64.0 ft. | 65.0 ft. |