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 |
|---|---|---|---|---|---|
| INDIAN CREEK | Iowa | 1930 | 4,059 | 13.7 m | |
| BLACKHAWK CREEK | Iowa | 1950 | 4,004 | 14.3 m | |
| FOUR MILE CREEK | Iowa | 1978 | 3,908 | 75.0 m | |
| DES MOINES RIVER | Iowa | 1911 | 3,844 | 153.3 m | |
| MAPLE RIVER | Iowa | 1967 | 3,720 | 93.0 m | |
| SMALL CREEK | Iowa | 1886 | 3,705 | 11.6 m | |
| UP RR & LYNN CK | Iowa | 1971 | 3,584 | 216.4 m | |
| RAILROAD CREEK | Iowa | 1961 | 3,529 | 11.0 m | |
| FLOYD RIVER | Iowa | 1962 | 3,523 | 93.0 m | |
| CEDAR RIVER | Iowa | 1979 | 3,461 | 208.8 m | |
| BLACK HAWK CREEK | Iowa | 1931 | 3,230 | 54.6 m | |
| OVER UP RR & STREET | Iowa | 1937 | 3,200 | 201.2 m | |
| HINKLE CREEK | Iowa | 1973 | 3,197 | 31.4 m | |
| WAPSI CREEK | Iowa | 1971 | 3,080 | 31.4 m | |
| INDIAN CREEK | Iowa | 1935 | 3,013 | 13.4 m | |
| I-29 | Iowa | 1959 | 2,980 | 64.0 m | |
| BIG SUGAR CREEK | Iowa | 1979 | 2,980 | 88.7 m | |
| MOSQUITO CREEK | Iowa | 1965 | 2,949 | 46.3 m | |
| BIG CREEK | Iowa | 1957 | 2,930 | 127.4 m | |
| MUD CREEK | Iowa | 1927 | 2,902 | 6.7 m | |
| ODEBOLT CREEK | Iowa | 1967 | 2,884 | 46.6 m | |
| IOWA RIVER | Iowa | 1955 | 2,838 | 162.8 m | |
| ROCK CREEK | Iowa | 1965 | 2,838 | 31.1 m | |
| RACCOON AND RR | Iowa | 1936 | 2,825 | 288.6 m | |
| BEAR CREEK | Iowa | 1969 | 2,740 | 38.7 m | |
| DRY RUN CREEK | Iowa | 1905 | 2,673 | 13.4 m | |
| DRAINAGE DITCH | Iowa | 1953 | 2,671 | 7.6 m | |
| SMALL NATURAL STREAM | Iowa | 1954 | 2,671 | 28.0 m | |
| DRAINAGE DITCH | Iowa | 1953 | 2,642 | 7.3 m | |
| ENGLISH CREEK | Iowa | 1975 | 2,640 | 62.5 m | |
| SUGAR CREEK | Iowa | 1933 | 2,628 | 7.9 m | |
| JOHNSON CREEK | Iowa | 1933 | 2,628 | 10.7 m | |
| BNSF RR AND STREAM | Iowa | 1964 | 2,620 | 75.0 m | |
| EAST BLUE CREEK | Iowa | 1930 | 2,583 | 28.0 m | |
| LITTLE SIOUX RIVER | Iowa | 1963 | 2,573 | 61.9 m | |
| RALSTON CREEK | Iowa | 1910 | 2,487 | 10.4 m | |
| GALLS CREEK | Iowa | 1930 | 2,450 | 10.4 m | |
| DRAINAGE DITCH | Iowa | 1954 | 2,396 | 25.0 m | |
| SOLDIER CR (DD NO 247) | Iowa | 1974 | 2,364 | 31.4 m | |
| RALSTON CREEK | Iowa | 1930 | 2,356 | 9.8 m | |
| ELKHORN CREEK | Iowa | 1929 | 2,340 | 18.9 m | |
| IOWA RIVER | Iowa | 1950 | 2,340 | 385.6 m | |
| BUCKLEY CREEK | Iowa | 1967 | 2,340 | 31.1 m | |
| PERRY CREEK | Iowa | 1963 | 2,330 | 17.1 m | |
| WAPSI RIVER OVERFLOW | Iowa | 1922 | 2,310 | 83.8 m | |
| DD NO 247 | Iowa | 1974 | 2,284 | 23.8 m | |
| MISSISSIPPI RIVER | Iowa | 1931 | 2,200 | 496.8 m | |
| CEDAR RIVER | Iowa | 1979 | 2,193 | 208.8 m | |
| WINNEBAGO RIVER | Iowa | 1963 | 2,192 | 39.0 m | |
| RALSTON CREEK | Iowa | 1911 | 2,176 | 6.4 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.