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 |
|---|---|---|---|---|---|
| SMALL STREAM | Iowa | 1987 | 29 | 9.8 m | |
| NORTH SKUNK RIVER | Iowa | 1938 | 29 | 9.1 m | |
| WEASEL CK | Iowa | 1957 | 28 | 7.6 m | |
| SMALL | Iowa | 1988 | 27 | 7.9 m | |
| MCCANDLESS CLEGHORN | Iowa | 1976 | 26 | 10.1 m | |
| MINK CREEK | Iowa | 1938 | 26 | 8.8 m | |
| STREAM | Iowa | 1924 | 26 | 10.1 m | |
| SMALL | Iowa | 1983 | 26 | 15.5 m | |
| SMALL STREAM | Iowa | 1927 | 26 | 6.7 m | |
| CREEK | Iowa | 1956 | 26 | 23.8 m | |
| CREEK | Iowa | 1967 | 26 | 12.8 m | |
| BR NISHNABOTNA | Iowa | 1959 | 26 | 7.0 m | |
| E NISHNABOTNA RIVER | Iowa | 1971 | 26 | 27.4 m | |
| DRAINAGE | Iowa | 1958 | 26 | 10.1 m | |
| CREEK | Iowa | 1952 | 26 | 18.3 m | |
| WATERWAY | Iowa | 1955 | 26 | 15.9 m | |
| PLYMOUTH CREEK | Iowa | 1960 | 26 | 18.3 m | |
| BUCK CREEK | Iowa | 1974 | 26 | 32.0 m | |
| STREAM | Iowa | 1900 | 26 | 12.2 m | |
| EAST BIG CREEK | Iowa | 1951 | 26 | 21.6 m | |
| MIDDLE BR WAPSINONOC CR | Iowa | 1950 | 26 | 14.6 m | |
| E FK GRAND RIVER | Iowa | 1961 | 26 | 37.2 m | |
| WESTFIELD CREEK | Iowa | 1951 | 26 | 38.4 m | |
| ROCK RUN CREEK | Iowa | 1930 | 26 | 8.5 m | |
| BR ROCK RUN CR | Iowa | 1900 | 26 | 10.1 m | |
| WILLOW CREEK | Iowa | 1900 | 26 | 14.0 m | |
| ROCK FALLS CREEK | Iowa | 1900 | 26 | 8.8 m | |
| MAPLE RIVER | Iowa | 1900 | 26 | 43.0 m | |
| STREAM | Iowa | 1968 | 26 | 7.9 m | |
| CREEK | Iowa | 1953 | 26 | 6.1 m | |
| KEIGLEY CREEK | Iowa | 1949 | 26 | 12.8 m | |
| DRAINAGE DITCH | Iowa | 1923 | 26 | 12.8 m | |
| BEAR CREEK | Iowa | 1972 | 26 | 19.2 m | |
| WALNUT CREEK | Iowa | 1915 | 26 | 14.3 m | |
| BOONE RIVER | Iowa | 1924 | 26 | 55.5 m | |
| GOOSE CREEK | Iowa | 1975 | 26 | 10.1 m | |
| WEST IOWA RIVER | Iowa | 1957 | 26 | 29.0 m | |
| BOONE RIVER | Iowa | 1967 | 26 | 17.7 m | |
| WEST IOWA RIVER | Iowa | 1956 | 26 | 13.7 m | |
| SMALL STREAM | Iowa | 1986 | 26 | 12.8 m | |
| CREEK | Iowa | 1986 | 26 | 14.3 m | |
| HONEY CREEK | Iowa | 1986 | 26 | 18.3 m | |
| WEST FORK CROOKED CREEK | Iowa | 1949 | 26 | 14.3 m | |
| TILTON CREEK | Iowa | 1981 | 26 | 10.4 m | |
| DRAINAGE | Iowa | 1976 | 26 | 13.7 m | |
| PIGEON CREEK | Iowa | 1955 | 26 | 18.3 m | |
| BRANCH SUGAR CREEK | Iowa | 1922 | 26 | 7.9 m | |
| LITTLE WAPSIPINICON RVR | Iowa | 1984 | 26 | 14.3 m | |
| SMALL STREAM | Iowa | 1940 | 26 | 11.9 m | |
| UPPER IOWA RIVER | Iowa | 1880 | 26 | 34.7 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.