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 | 1950 | 100 | 7.9 m | |
| CK | South Dakota | 1945 | 100 | 8.2 m | |
| BIG SIOUX RV | South Dakota | 1922 | 100 | 43.6 m | |
| UNNAMED CREEK | South Dakota | 1941 | 100 | 16.3 m | |
| CK | South Dakota | 1926 | 100 | 15.8 m | |
| GRACE COOLIDGE CREEK | South Dakota | 1950 | 100 | 8.3 m | |
| CK | South Dakota | 1926 | 100 | 15.8 m | |
| OLD LODGE CK | South Dakota | 1950 | 100 | 23.2 m | |
| DRAINAGE DITCH | South Dakota | 1985 | 100 | 15.2 m | |
| SIX MILE CK | South Dakota | 1967 | 99 | 22.0 m | |
| CHAPELLE CK | South Dakota | 1963 | 99 | 21.9 m | |
| SNAKE CREEK | South Dakota | 1929 | 98 | 29.3 m | |
| WILLOW CREEK | South Dakota | 1968 | 98 | 12.2 m | |
| CREEK | South Dakota | 1930 | 98 | 6.7 m | |
| FOOT CREEK | South Dakota | 1977 | 98 | 18.3 m | |
| MUD CREEK | South Dakota | 1930 | 98 | 25.6 m | |
| MUD CREEK | South Dakota | 1915 | 98 | 16.2 m | |
| JAMES RIVER | South Dakota | 1920 | 98 | 31.1 m | |
| MUD CREEK | South Dakota | 1935 | 98 | 29.9 m | |
| JAMES RIVER | South Dakota | 1900 | 98 | 18.9 m | |
| CREEK | South Dakota | 1935 | 98 | 7.3 m | |
| CREEK | South Dakota | 1935 | 98 | 10.7 m | |
| CREEK | South Dakota | 1935 | 98 | 7.9 m | |
| SOUTH FORK YELLOW BANK R | South Dakota | 1930 | 98 | 16.2 m | |
| CK | South Dakota | 1945 | 97 | 9.1 m | |
| VERMILLION RV | South Dakota | 1970 | 97 | 55.4 m | |
| VERMILLION RV | South Dakota | 1985 | 97 | 19.2 m | |
| VERMILLION RV | South Dakota | 1985 | 97 | 24.5 m | |
| WEST FORK VERMILLION RV | South Dakota | 1992 | 97 | 29.6 m | |
| CLAY CK DITCH | South Dakota | 1900 | 97 | 30.2 m | |
| VERMILLION RV | South Dakota | 1930 | 97 | 46.3 m | |
| BAPTIST CK | South Dakota | 1940 | 97 | 9.1 m | |
| CK | South Dakota | 1969 | 96 | 9.4 m | |
| SOUTH MEDICINE CK | South Dakota | 1964 | 96 | 19.2 m | |
| CK | South Dakota | 1935 | 95 | 6.7 m | |
| BIG SIOUX RV | South Dakota | 1970 | 92 | 24.2 m | |
| BIG SIOUX RV | South Dakota | 1907 | 92 | 22.0 m | |
| BIG SIOUX RV | South Dakota | 1970 | 92 | 34.3 m | |
| CK | South Dakota | 1930 | 92 | 12.0 m | |
| CK | South Dakota | 1930 | 92 | 8.7 m | |
| NORTH DEER CK | South Dakota | 1930 | 92 | 12.9 m | |
| CK | South Dakota | 1930 | 92 | 6.7 m | |
| MEDARY CK | South Dakota | 1910 | 92 | 34.3 m | |
| BR OF NORTH DEER CK | South Dakota | 1940 | 92 | 12.3 m | |
| BR NORTH DEER CK | South Dakota | 1930 | 92 | 8.1 m | |
| CK | South Dakota | 1977 | 92 | 9.5 m | |
| SIXMILE CK | South Dakota | 1940 | 92 | 10.9 m | |
| MEDARY CK | South Dakota | 1930 | 92 | 26.5 m | |
| SIX MILE CK | South Dakota | 1930 | 92 | 16.2 m | |
| SIX MILE CK | South Dakota | 1950 | 92 | 10.3 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.