Poor Condition Bridges in Iowa
4,423 bridges rated Poor condition in Iowa. 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 4,423 such bridges in Iowa.
| Bridge | State | Condition | Year Built | ADT | Length |
|---|---|---|---|---|---|
| MILLER CREEK | Iowa | 1965 | 255 | 38.1 m | |
| TRIB W FORK CEDAR RIVER | Iowa | 1966 | 255 | 9.1 m | |
| LITTLE TURKEY RIVER | Iowa | 1960 | 255 | 54.4 m | |
| DEVIL CREEK | Iowa | 1948 | 250 | 46.6 m | |
| VILLAGE CREEK | Iowa | 1968 | 250 | 38.7 m | |
| BEAVER CREEK | Iowa | 1960 | 250 | 31.4 m | |
| LONG CREEK | Iowa | 1963 | 250 | 46.9 m | |
| NO NAME CREEK | Iowa | 1925 | 249 | 8.5 m | |
| CREEK | Iowa | 1976 | 249 | 10.4 m | |
| OVERFLOW ON BOYER RIVER | Iowa | 1964 | 249 | 23.8 m | |
| FRINK CREEK | Iowa | 1937 | 246 | 13.7 m | |
| WINNEBAGO RIVER | Iowa | 1975 | 245 | 32.6 m | |
| COOPER CREEK | Iowa | 1959 | 244 | 32.6 m | |
| DRAINAGE | Iowa | 1920 | 242 | 6.7 m | |
| SMALL CREEK | Iowa | 1959 | 242 | 13.4 m | |
| SMALL STREAM | Iowa | 1972 | 240 | 7.3 m | |
| SMALL STREAM | Iowa | 1960 | 240 | 39.6 m | |
| DRY BRANCH | Iowa | 1970 | 240 | 34.7 m | |
| BACKWATER (PUMP STATION) | Iowa | 1972 | 240 | 10.7 m | |
| CREEK | Iowa | 1957 | 240 | 23.8 m | |
| DD NO 70 | Iowa | 1974 | 240 | 23.8 m | |
| STREAM | Iowa | 1964 | 240 | 9.1 m | |
| ELK CREEK | Iowa | 1958 | 240 | 54.3 m | |
| STREAM | Iowa | 1959 | 236 | 9.4 m | |
| DRAINAGE DITCH | Iowa | 1972 | 236 | 9.4 m | |
| MAYNES CREEK | Iowa | 1971 | 236 | 58.5 m | |
| INDIAN CREEK | Iowa | 1930 | 235 | 13.7 m | |
| STREAM | Iowa | 1966 | 234 | 13.7 m | |
| DRAINAGE | Iowa | 1900 | 232 | 11.0 m | |
| RIO GRANDE CREEK | Iowa | 1940 | 232 | 7.0 m | |
| DRAINAGE | Iowa | 1940 | 232 | 6.4 m | |
| DRAINAGE | Iowa | 1900 | 232 | 9.4 m | |
| DRAINAGE | Iowa | 1900 | 232 | 6.4 m | |
| LITTLE BIG CREEK | Iowa | 1915 | 232 | 8.5 m | |
| BR BIG CEDAR CK DD#21 | Iowa | 1975 | 230 | 23.8 m | |
| DRAINAGE DITCH | Iowa | 1960 | 230 | 39.9 m | |
| WEST RAT CREEK | Iowa | 1965 | 230 | 13.1 m | |
| GRANT 5 OPEN DITCH | Iowa | 1938 | 230 | 10.1 m | |
| SOUTH LIZARD CREEK | Iowa | 1975 | 230 | 39.0 m | |
| LITTLE ROCK RIVER | Iowa | 1960 | 230 | 62.8 m | |
| CROOKED CREEK | Iowa | 1923 | 230 | 12.2 m | |
| I-29 | Iowa | 1958 | 229 | 68.9 m | |
| HAITZ DD | Iowa | 1961 | 229 | 51.5 m | |
| DRAINAGE DITCH 110 | Iowa | 1963 | 229 | 9.8 m | |
| WEST FORK DD | Iowa | 1961 | 229 | 63.4 m | |
| TIMBER CREEK | Iowa | 1977 | 227 | 32.0 m | |
| SPRING CR | Iowa | 1967 | 227 | 23.5 m | |
| DRAINAGE | Iowa | 1945 | 226 | 15.2 m | |
| WALNUT CREEK | Iowa | 1971 | 226 | 8.2 m | |
| DRY RUN CREEK | Iowa | 1977 | 226 | 39.3 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.