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 |
|---|---|---|---|---|---|
| CEDAR RIVER | Iowa | 1968 | 324 | 316.4 m | |
| IOWA RIVER | Iowa | 1959 | 320 | 59.1 m | |
| OVERFLOW IOWA RIVER | Iowa | 1900 | 320 | 12.8 m | |
| DRAINAGE DITCH | Iowa | 1960 | 319 | 16.8 m | |
| OTTER CREEK | Iowa | 1969 | 319 | 31.4 m | |
| PRAIRE CREEK | Iowa | 1996 | 319 | 27.7 m | |
| GREY CREEK | Iowa | 1970 | 319 | 23.5 m | |
| CREEK | Iowa | 1959 | 319 | 8.2 m | |
| LITTLE SIOUX | Iowa | 1969 | 319 | 30.8 m | |
| STONY CREEK | Iowa | 1990 | 315 | 31.4 m | |
| SALT CREEK | Iowa | 1959 | 314 | 44.5 m | |
| STEIN CREEK | Iowa | 1959 | 314 | 38.7 m | |
| TURKEY RIVER | Iowa | 1953 | 314 | 103.6 m | |
| SHANCTON CREEK | Iowa | 1970 | 310 | 6.4 m | |
| SOUTH CHEQUEST CREEK | Iowa | 1981 | 310 | 31.4 m | |
| ELK RIVER | Iowa | 1968 | 310 | 38.7 m | |
| CREEK | Iowa | 1920 | 310 | 14.3 m | |
| CREEK | Iowa | 1963 | 310 | 9.1 m | |
| CHARITON RIVER | Iowa | 1970 | 310 | 76.8 m | |
| KLONDIKE CREEK | Iowa | 1966 | 309 | 30.5 m | |
| WEST FORK LITTLE SIOUX | Iowa | 1969 | 309 | 54.9 m | |
| WEST MILL CREEK | Iowa | 1979 | 309 | 49.7 m | |
| BUFFALO CREEK | Iowa | 1958 | 309 | 26.8 m | |
| WEST BRANCH 102 RIVER | Iowa | 1936 | 309 | 45.7 m | |
| WEST 102 RIVER | Iowa | 1985 | 309 | 43.3 m | |
| DRAINAGE DITCH | Iowa | 1994 | 305 | 23.8 m | |
| BRANCH OF RICHLAND CREEK | Iowa | 1967 | 304 | 23.8 m | |
| BRANCH BURNETTE CREEK | Iowa | 1984 | 304 | 27.4 m | |
| EAST BOYER RIVER | Iowa | 1913 | 303 | 15.9 m | |
| EF DES MOINES RIVER | Iowa | 1957 | 300 | 31.1 m | |
| MIDDLE RIVER | Iowa | 1958 | 300 | 76.8 m | |
| DD 261 | Iowa | 1963 | 300 | 7.9 m | |
| W NODAWAY | Iowa | 1939 | 300 | 54.9 m | |
| WEST BEAVER CREEK | Iowa | 1921 | 300 | 7.9 m | |
| INDIAN CR | Iowa | 1890 | 299 | 32.0 m | |
| BEEDS CREEK | Iowa | 1965 | 295 | 9.4 m | |
| CROW CREEK | Iowa | 1975 | 295 | 18.9 m | |
| BR MISS RIVER | Iowa | 1978 | 294 | 13.4 m | |
| PLUM CREEK | Iowa | 1950 | 294 | 6.7 m | |
| WET CREEK | Iowa | 1893 | 294 | 20.7 m | |
| DD 150-86 | Iowa | 1964 | 293 | 13.1 m | |
| LITTLE MUCHAKINOCK | Iowa | 1965 | 290 | 28.3 m | |
| RIGGS CREEK | Iowa | 1970 | 290 | 11.0 m | |
| DRAINAGE DITCH | Iowa | 1976 | 290 | 7.6 m | |
| DD 9-13 | Iowa | 1966 | 290 | 21.0 m | |
| CARTER CK | Iowa | 1973 | 290 | 45.7 m | |
| SO SKUNK RIVER | Iowa | 1956 | 290 | 104.5 m | |
| MUD CREEK | Iowa | 1970 | 290 | 38.1 m | |
| MUD CREEK | Iowa | 1948 | 290 | 6.7 m | |
| RACCOON RIVER | Iowa | 1965 | 290 | 77.1 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.