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 |
|---|---|---|---|---|---|
| MOCCASIN CK | South Dakota | 1954 | 21,635 | 36.4 m | |
| BIG SIOUX RIVER | South Dakota | 1979 | 13,800 | 78.5 m | |
| BIG SIOUX RIVER | South Dakota | 1986 | 9,363 | 98.8 m | |
| SD038 | South Dakota | 1989 | 8,815 | 72.9 m | |
| 302 ST (FAS 6372) | South Dakota | 1960 | 8,020 | 36.3 m | |
| BIG SIOUX RV | South Dakota | 1966 | 7,985 | 121.4 m | |
| BIG SIOUX RV | South Dakota | 1966 | 7,985 | 121.4 m | |
| CAPITOL LAKE OUTLET | South Dakota | 1950 | 7,155 | 20.9 m | |
| BIG SIOUX RIVER | South Dakota | 1975 | 5,300 | 124.1 m | |
| BIG SIOUX RV | South Dakota | 1974 | 4,970 | 30.5 m | |
| RAPID CK | South Dakota | 1974 | 4,700 | 55.5 m | |
| R&W RR | South Dakota | 1952 | 4,431 | 64.7 m | |
| SPEARFISH CK | South Dakota | 1988 | 3,981 | 25.0 m | |
| MARNE CREEK | South Dakota | 1976 | 3,980 | 12.3 m | |
| CK | South Dakota | 1946 | 3,776 | 9.4 m | |
| JAMES RV | South Dakota | 1960 | 3,601 | 99.5 m | |
| WEST PIPESTONE CK | South Dakota | 1953 | 3,442 | 56.7 m | |
| ELM RV | South Dakota | 1959 | 3,041 | 88.8 m | |
| CK | South Dakota | 1974 | 2,666 | 6.2 m | |
| R&W RR | South Dakota | 1953 | 2,622 | 76.0 m | |
| BNSF RAILROAD | South Dakota | 1914 | 2,560 | 69.5 m | |
| BIG SIOUX RIVER | South Dakota | 1966 | 2,419 | 98.8 m | |
| HORSE CK | South Dakota | 1947 | 2,378 | 9.8 m | |
| MOCCASIN CREEK | South Dakota | 1974 | 2,069 | 19.2 m | |
| MILLER CK | South Dakota | 1934 | 2,000 | 7.3 m | |
| WILLOW CREEK | South Dakota | 1990 | 1,904 | 13.1 m | |
| LITTLE WHITE RIVER | South Dakota | 1972 | 1,851 | 33.5 m | |
| ICE BOX CK | South Dakota | 1964 | 1,725 | 8.9 m | |
| NORTH BR DRY CK | South Dakota | 1964 | 1,651 | 26.4 m | |
| CK | South Dakota | 1959 | 1,559 | 6.3 m | |
| CROW CK | South Dakota | 1940 | 1,500 | 18.9 m | |
| BIG SIOUX RV | South Dakota | 1940 | 1,499 | 24.4 m | |
| TRIB TO SKUNK CK | South Dakota | 1982 | 1,492 | 12.8 m | |
| CREEK | South Dakota | 1930 | 1,400 | 8.2 m | |
| CLAYMORE CK | South Dakota | 1958 | 1,378 | 76.7 m | |
| BIG SIOUX RV | South Dakota | 1930 | 1,330 | 23.5 m | |
| POTATO CREEK | South Dakota | 1942 | 1,314 | 20.7 m | |
| CK | South Dakota | 1925 | 1,305 | 16.0 m | |
| MEDARY CK | South Dakota | 1938 | 1,275 | 23.2 m | |
| BOX ELDER CK | South Dakota | 1950 | 1,214 | 14.3 m | |
| TRIB TO BIG SIOUX RV | South Dakota | 1955 | 1,204 | 16.5 m | |
| MAHONEY CK | South Dakota | 1940 | 1,167 | 24.2 m | |
| BR NORTH DEER CK | South Dakota | 1925 | 1,163 | 28.1 m | |
| CK | South Dakota | 1950 | 1,159 | 27.7 m | |
| SKUNK CK | South Dakota | 1953 | 1,135 | 28.0 m | |
| LITTLE WHITE RIVER | South Dakota | 1967 | 1,050 | 30.2 m | |
| LITTLE WHITE RIVER | South Dakota | 1967 | 1,050 | 30.2 m | |
| LITTLE WHITE RIVER | South Dakota | 1965 | 1,019 | 30.2 m | |
| BEAVER CREEK | South Dakota | 1967 | 1,006 | 36.3 m | |
| CENTER LAKE INLET | South Dakota | 1950 | 1,000 | 7.4 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.