| Name | Location | Status | Design | Year Built | Year Lost | Span Length | Total Length |
|---|---|---|---|---|---|---|---|
| Beaverhead River Bridge | CR 104 over Beaverhead River | Open to traffic | Through truss | 1910 | -- | 120.1 ft. | 122.1 ft. |
| Big Hole River Overflow Bridge | CR 141 over Big Hole River Overflow | Open to traffic | Pony truss | 2000 | -- | 105.0 ft. | 105.0 ft. |
| Blaine Spring Creek Bridge | MT 249 over Blaine Spring Creek | Open to traffic | Through truss | 1897 | -- | 125.0 ft. | 128.0 ft. |
| Jefferson River Bridge | MT 422 over Jefferson River | No longer exists | Truss | 1910 | 2003 | -- | 191.9 ft. |
| Madison River Bridge | CR 204 over Madison River | No longer exists | Truss | 2001 | 2001 | -- | 177.8 ft. |
| Madison River Bridge | CR 220 over Madison River | Open to traffic | Pony truss | 1902 | -- | 102.0 ft. | 304.1 ft. |
| Madison River Bridge | US 287 over Madison River | No longer exists | Through truss | 1935 | 2001 | 144.0 ft. | 294.0 ft. |
| Madison River Bridge | MT 249 over Madison River | Open to traffic | Through truss | 1897 | -- | 95.1 ft. | 195.9 ft. |
| Ruby River Bridge | CR 170 over Ruby River | Open to traffic | Pony truss | 1936 | -- | 54.1 ft. | 55.1 ft. |
| West Fork Madison River Bridge | Bridge over West Fork Madison River | Open to traffic | Pony truss | 1947 | -- | 59.7 ft. | 98.8 ft. |