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Prairie County
| Name | Location | Status | Design | Year Built | Year Lost | Span Length (ft.) | Total Length (ft.) |
|---|
| BNSF - Fallon Creek Bridge | BNSF Railway over Fallon Creek | Open to traffic | Deck plate girder | 1921 | -- | 110.0 | 220.0 |
| BNSF - Powder River Bridge | BNSF Railway over Powder River | Open to traffic | Warren through truss | 1921 | -- | 155.0 | 664.0 |
| BNSF - Terry Overpass | Railroad (BNSF) over Railroad (BNSF) | Open to traffic | Pratt pony truss | 1907 | -- | -- | -- |
| Brockway Bridge | S 253 over Yellowstone River | Replaced by new bridge in 1959; Destroyed by ice in 1971 | Pennsylvania through truss | 1909 | 1971 | -- | 800.0 |
| Cabin Creek Road Bridge | Cabin Creek Road (CR 112) over Cabin Creek | Replaced by a new bridge | Pony truss | 1964 | 2012 | 45.9 | 45.9 |
| Cabin Creek-Spring Creek Road Bridge | Spring Creek Road (CR 124) over Cabin Creek | Open to traffic | Warren pony truss with alternating verticals | 1933 | -- | 60.0 | 62.0 |
| Calypso Bridge | Milwakuee Road over Yellowstone river | Open to traffic | Parker through truss | 1907 | -- | -- | -- |
| MILW - Custer Creek Bridge (1913) | Chicago, Milwaukee, St. Paul & Pacific Railroad over Custer Creek | Destroyed by Cloudburst-related flash flooding | Pony/through plate girder | 1913 | 1938 | -- | -- |
| MILW - Custer Creek Bridge (1938) | Chicago, Milwaukee, St. Paul & Pacific Railroad over Custer Creek | Abandoned | Unknown | 1938 | -- | -- | -- |
| NP - Fallon Creek Bridge (Old) | Northern Pacific Railroad over Fallon Creek | Replaced by a new bridge | Warren deck truss | 1895 | -- | 110.0 | 220.0 |
| NP - Powder River Bridge (Old) | Northern Pacific Railroad over Powder River | Replaced by a new bridge | Pratt through truss | 1895 | -- | 155.0 | 460.0 |
| O'Fallon Creek Bridge | CR 105 over O'Fallon Creek | No longer exists | Through truss | 1914 | 2003 | 140.1 | 205.1 |
| Powder River Bridge | Frontage Road 81020 over Powder River | Open to traffic | Warren through truss | 1945 | -- | -- | 632.9 |
| Yellowstone River Bridge | Frontage Road 114 over Yellowstone River | Open to traffic | Warren through truss | 1945 | -- | 286.1 | 1145.1 |
| Yellowstone River Bridge (Old) | US 10 over Yellowstone River | Destroyed by disaster: Ice jam | Camelback through truss | 1914 | 1943 | -- | -- |