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 | 1900 | 46 | 6.1 m | |
| DD 41 | Iowa | 1948 | 46 | 8.8 m | |
| DD | Iowa | 1976 | 46 | 13.4 m | |
| ARGO SLOUGH | Iowa | 1900 | 46 | 14.0 m | |
| WATERWAY | Iowa | 1951 | 46 | 16.5 m | |
| WATERWAY | Iowa | 1967 | 46 | 12.2 m | |
| NISHNABOTNA RIVER | Iowa | 1959 | 46 | 71.6 m | |
| BLACK CAT CREEK | Iowa | 1964 | 46 | 21.1 m | |
| BRANCH FLANK CREEK | Iowa | 1965 | 46 | 41.8 m | |
| OLD CHANNEL DES MOINES R | Iowa | 1956 | 46 | 18.0 m | |
| BROADHORN CREEK | Iowa | 1915 | 46 | 28.0 m | |
| W FK W NISHNABOTNA RIVER | Iowa | 1944 | 46 | 36.9 m | |
| TRIB OF DICKENSON BRANCH | Iowa | 1965 | 46 | 24.4 m | |
| KILGORE CREEK | Iowa | 1979 | 46 | 12.5 m | |
| STREAM | Iowa | 1957 | 46 | 6.7 m | |
| CREEK | Iowa | 1900 | 46 | 12.8 m | |
| MUD CREEK | Iowa | 1900 | 46 | 37.2 m | |
| KNACK CREEK | Iowa | 1915 | 46 | 10.7 m | |
| SKILLET CREEK | Iowa | 1919 | 46 | 6.7 m | |
| CEDAR CREEK | Iowa | 1952 | 46 | 25.3 m | |
| GRAND RIVER | Iowa | 1957 | 46 | 63.1 m | |
| STREAM | Iowa | 1988 | 46 | 12.2 m | |
| CHARITON RIVER | Iowa | 1960 | 45 | 92.7 m | |
| DEER CREEK | Iowa | 1925 | 45 | 11.9 m | |
| N SHOAL CREEK | Iowa | 1971 | 45 | 17.7 m | |
| N BRANCH SOAP CREEK | Iowa | 1951 | 45 | 55.8 m | |
| DRAINAGE | Iowa | 1951 | 45 | 13.4 m | |
| MID FK GRAND RIVER | Iowa | 1988 | 45 | 47.2 m | |
| WATERWAY | Iowa | 1955 | 45 | 13.7 m | |
| N ENGLISH RIVER | Iowa | 1955 | 45 | 28.7 m | |
| SUGAR CREEK | Iowa | 1980 | 45 | 9.4 m | |
| DEER CREEK | Iowa | 1977 | 45 | 10.7 m | |
| LOTTS CREEK | Iowa | 1967 | 45 | 26.7 m | |
| SUGAR CREEK | Iowa | 1976 | 45 | 7.3 m | |
| JONES CREEK | Iowa | 1979 | 45 | 15.2 m | |
| DRAINAGE | Iowa | 1950 | 45 | 13.1 m | |
| MIDDLE RIVER | Iowa | 1948 | 45 | 63.4 m | |
| CREEK | Iowa | 1960 | 45 | 12.2 m | |
| MIDDLE RACOON | Iowa | 1958 | 45 | 61.3 m | |
| MASON CREEK | Iowa | 1987 | 45 | 12.2 m | |
| SUGAR CREEK | Iowa | 1933 | 45 | 17.7 m | |
| IOWAY CREEK | Iowa | 1917 | 45 | 19.8 m | |
| STREAM | Iowa | 1949 | 45 | 21.9 m | |
| LITTLE SIOUX RIVER | Iowa | 1960 | 45 | 76.8 m | |
| MONONA HARRISON DD | Iowa | 1959 | 45 | 55.5 m | |
| DRAINAGE | Iowa | 1981 | 45 | 13.1 m | |
| STREAM | Iowa | 1953 | 45 | 10.7 m | |
| SIOUX RIVER | Iowa | 1960 | 45 | 17.4 m | |
| WEST FORK DD | Iowa | 1961 | 45 | 51.5 m | |
| SMALL CREEK | Iowa | 1955 | 45 | 13.1 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.