Poor Condition Bridges in South Dakota
945 bridges rated Poor condition in South Dakota. FHWA National Bridge Inventory.
Bridges Rated Poor Condition
A bridge is rated Poor when one or more of its major components (deck, superstructure, or substructure) has a condition rating of 4 or below on the FHWA 0–9 scale. Poor condition does not mean imminent danger of collapse, but indicates significant deterioration requiring priority maintenance or replacement. There are 945 such bridges in South Dakota.
| Bridge | State | Condition | Year Built | ADT | Length |
|---|---|---|---|---|---|
| CK | South Dakota | 1926 | 10 | 7.0 m | |
| REE CK | South Dakota | 1914 | 10 | 12.8 m | |
| TURTLE CK | South Dakota | 1930 | 10 | 7.9 m | |
| CK | South Dakota | 1930 | 10 | 7.9 m | |
| WOLF CK | South Dakota | 1915 | 10 | 12.5 m | |
| WOLF CK | South Dakota | 1915 | 10 | 12.5 m | |
| CK | South Dakota | 1935 | 10 | 11.6 m | |
| WOLF CK | South Dakota | 1930 | 10 | 11.0 m | |
| WOLF CK | South Dakota | 1910 | 10 | 16.5 m | |
| COTTONWOOD CK | South Dakota | 1940 | 10 | 18.3 m | |
| COTTONWOOD CK | South Dakota | 1935 | 10 | 27.7 m | |
| SOUTH FORK BAD RV | South Dakota | 1940 | 10 | 22.9 m | |
| ROCK CK | South Dakota | 1987 | 10 | 7.3 m | |
| CREEK | South Dakota | 1966 | 10 | 9.4 m | |
| CREEK | South Dakota | 1955 | 10 | 10.1 m | |
| CK | South Dakota | 1945 | 10 | 18.3 m | |
| CREEK | South Dakota | 1940 | 10 | 16.2 m | |
| CK | South Dakota | 1950 | 10 | 23.5 m | |
| CK | South Dakota | 1964 | 10 | 34.1 m | |
| CK | South Dakota | 1935 | 10 | 17.4 m | |
| ELK CK | South Dakota | 1955 | 10 | 18.6 m | |
| PINE CK | South Dakota | 1966 | 10 | 14.5 m | |
| PINE CK | South Dakota | 1992 | 10 | 12.2 m | |
| TRIB. TO JACK MOORE CRK | South Dakota | 1950 | 10 | 9.2 m | |
| CREEK | South Dakota | 1938 | 10 | 7.3 m | |
| MEDICINE KNOLL CK | South Dakota | 1913 | 10 | 15.5 m | |
| CK | South Dakota | 1950 | 10 | 7.9 m | |
| DRAINAGE DITCH | South Dakota | 1930 | 10 | 7.5 m | |
| MARNE CREEK | South Dakota | 1930 | 10 | 6.7 m | |
| BEAR CK | South Dakota | 1935 | 10 | 12.2 m | |
| RAPID CREEK | South Dakota | 1945 | 10 | 10.0 m | |
| COTTONWOOD CK | South Dakota | 1982 | 9 | 15.5 m | |
| TIMBER CREEK | South Dakota | 1940 | 9 | 9.4 m | |
| TIMBER CREEK | South Dakota | 1935 | 9 | 9.8 m | |
| BAD RIVER | South Dakota | 1918 | 6 | 60.4 m | |
| CK | South Dakota | 1950 | 5 | 9.9 m | |
| STRAY HORSE CK | South Dakota | 1910 | 5 | 25.2 m | |
| W. FORK OF VERMILLION RV | South Dakota | 1917 | 5 | 9.8 m | |
| ROCK CK | South Dakota | 1910 | 5 | 15.5 m | |
| ROCK CK | South Dakota | 1910 | 5 | 8.2 m | |
| CREEK | South Dakota | 1968 | 5 | 12.0 m | |
| TURKEY RIDGE CK | South Dakota | 1910 | 5 | 14.7 m | |
| TRIB. TO TURKEY CREEK | South Dakota | 1940 | 5 | 7.9 m | |
| DRAINAGE DITCH | South Dakota | 1930 | 4 | 16.1 m | |
| BIG SIOUX RIVER | South Dakota | 1935 | — | 73.8 m |
About Poor Condition Bridge Ratings
FHWA rates bridge components on a 0–9 scale. A rating of 4 or below on any major component (deck, superstructure, substructure) classifies the bridge as Poor condition. The bridge remains open to traffic but requires priority attention. Bridges rated 0–2 are immediately closed.