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 | 1932 | 30 | 9.1 m | |
| OLIVE BRANCH CREEK | Iowa | 1950 | 30 | 16.5 m | |
| SMALL STREAM | Iowa | 1923 | 30 | 7.3 m | |
| DRAINAGE | Iowa | 1957 | 30 | 17.4 m | |
| NORTH SKUNK RIVER | Iowa | 1938 | 29 | 9.1 m | |
| STREAM | Iowa | 1983 | 29 | 9.1 m | |
| NISHNABOTNA TRIB | Iowa | 1949 | 29 | 10.1 m | |
| WEYFORD CREEK | Iowa | 1960 | 29 | 9.8 m | |
| GRAYBILL CREEK | Iowa | 1950 | 29 | 53.3 m | |
| CREEK | Iowa | 1918 | 29 | 6.1 m | |
| SKUNK RIVER | Iowa | 1928 | 29 | 65.8 m | |
| TODD BRANCH | Iowa | 1940 | 29 | 6.4 m | |
| CREEK | Iowa | 1900 | 29 | 9.1 m | |
| FIELD STREAM | Iowa | 1957 | 29 | 7.0 m | |
| LONE TREE CREEK | Iowa | 1900 | 29 | 17.4 m | |
| CROOKED CREEK | Iowa | 1950 | 29 | 46.9 m | |
| BRANCH OF RICHLAND CREEK | Iowa | 1941 | 29 | 8.2 m | |
| SMALL STREAM | Iowa | 1987 | 29 | 9.8 m | |
| SILVER CREEK | Iowa | 1961 | 29 | 40.5 m | |
| SILVER CREEK | Iowa | 1930 | 29 | 50.3 m | |
| QUINN CREEK | Iowa | 1997 | 29 | 10.1 m | |
| CREEK | Iowa | 1966 | 29 | 21.9 m | |
| CREEK | Iowa | 1988 | 29 | 8.2 m | |
| SMALL DRY RUN | Iowa | 1988 | 29 | 7.6 m | |
| CRANE CREEK | Iowa | 1911 | 29 | 31.1 m | |
| LITTLEFLOOD CREEK | Iowa | 1987 | 29 | 15.5 m | |
| CREEK | Iowa | 1980 | 29 | 10.1 m | |
| SMALL STREAM | Iowa | 1952 | 29 | 12.8 m | |
| OTTER CREEK | Iowa | 1971 | 29 | 9.4 m | |
| #6 DITCH | Iowa | 1986 | 29 | 12.2 m | |
| LITTLE TARKIO TRIB | Iowa | 1947 | 29 | 9.4 m | |
| CREEK | Iowa | 1974 | 29 | 10.7 m | |
| MUNNS CREEK | Iowa | 1971 | 29 | 12.2 m | |
| BRANCH BLACK HAWK CREEK | Iowa | 1971 | 29 | 28.3 m | |
| BRANCH BLACKHAWK CREEK | Iowa | 1957 | 29 | 7.6 m | |
| BRANCH BEAVER CREEK | Iowa | 1971 | 29 | 14.3 m | |
| STREAM | Iowa | 1957 | 29 | 7.6 m | |
| SMALL STREAM | Iowa | 1982 | 29 | 12.5 m | |
| STREAM | Iowa | 1959 | 29 | 6.4 m | |
| SMALL STREAM | Iowa | 1987 | 29 | 18.6 m | |
| RAVEN CREEK | Iowa | 1940 | 29 | 13.1 m | |
| HONEY CREEK | Iowa | 1982 | 29 | 14.3 m | |
| BEAVER CREEK | Iowa | 1985 | 29 | 26.8 m | |
| IOWA RIVER (SOUTH FORK) | Iowa | 1956 | 29 | 31.7 m | |
| SOUTH FORK | Iowa | 1919 | 29 | 14.3 m | |
| OTTER CREEK | Iowa | 1930 | 29 | 29.0 m | |
| SMALL CREEK | Iowa | 1916 | 29 | 9.8 m | |
| HOFFMAN CREEK | Iowa | 1940 | 29 | 25.3 m | |
| LITTLE TURKEY RIVER | Iowa | 1985 | 29 | 16.5 m | |
| SMALL STREAM | Iowa | 1986 | 29 | 16.2 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.