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 |
|---|---|---|---|---|---|
| SOUTH ENGLISH RIVER | Iowa | 1964 | 480 | 23.5 m | |
| S WYACONDAH DITCH | Iowa | 1968 | 480 | 46.0 m | |
| STREAM | Iowa | 1966 | 480 | 30.8 m | |
| DRAINAGE | Iowa | 1968 | 479 | 17.7 m | |
| CREEK | Iowa | 1947 | 478 | 9.1 m | |
| HOWERDON CREEK | Iowa | 1954 | 477 | 37.2 m | |
| TOM CREEK | Iowa | 1954 | 477 | 38.7 m | |
| NISHNABOTNA RIVER | Iowa | 1949 | 477 | 111.3 m | |
| CLANTON CREEK | Iowa | 1932 | 477 | 6.1 m | |
| RAILROAD CREEK | Iowa | 1900 | 472 | 10.4 m | |
| DRAINAGE | Iowa | 1900 | 472 | 8.8 m | |
| HUNTER CREEK | Iowa | 1950 | 471 | 10.7 m | |
| CEDAR CREEK | Iowa | 1963 | 470 | 21.3 m | |
| MC CLURE CREEK | Iowa | 1970 | 470 | 31.1 m | |
| DRY RUN CREEK | Iowa | 1964 | 469 | 16.8 m | |
| CREEK | Iowa | 1970 | 469 | 23.8 m | |
| WEST FORK LITTLE SIOUX | Iowa | 1963 | 469 | 62.2 m | |
| INDIAN CREEK | Iowa | 1965 | 469 | 14.0 m | |
| SEVENMILE CREEK | Iowa | 1971 | 468 | 46.9 m | |
| CAMP CREEK | Iowa | 1950 | 467 | 24.4 m | |
| RIVER BEND CREEK | Iowa | 1963 | 462 | 9.8 m | |
| WAPSIPINICON RIVER | Iowa | 1940 | 462 | 46.6 m | |
| CREEK | Iowa | 1960 | 462 | 6.1 m | |
| CLOVERDALE CREEK | Iowa | 1958 | 459 | 25.0 m | |
| WALNUT CREEK | Iowa | 1976 | 459 | 17.7 m | |
| WEST CREEK | Iowa | 1958 | 459 | 45.7 m | |
| PICKERAL RUN | Iowa | 1993 | 459 | 39.0 m | |
| DRAINAGE DITCH | Iowa | 1914 | 459 | 7.0 m | |
| SKUNK RIVER | Iowa | 1992 | 459 | 42.1 m | |
| STREAM | Iowa | 1970 | 453 | 8.5 m | |
| LITTLE WAPSIPINICON | Iowa | 1967 | 452 | 8.5 m | |
| MIDDLE RIVER | Iowa | 1969 | 450 | 17.4 m | |
| LITTLE MILL CREEK | Iowa | 1935 | 450 | 8.2 m | |
| PRAIRIE CREEK | Iowa | 1963 | 450 | 23.2 m | |
| UNNAMED STREAM | Iowa | 1964 | 450 | 39.6 m | |
| MIDDLE RIVER | Iowa | 1932 | 450 | 78.3 m | |
| WATERWAY | Iowa | 1963 | 450 | 43.9 m | |
| WATERWAY | Iowa | 1970 | 450 | 23.8 m | |
| MAPLE RIVER | Iowa | 1964 | 450 | 23.5 m | |
| MIDDLE FK ENGLISH RIVER | Iowa | 1970 | 450 | 39.0 m | |
| IOWA RIVER | Iowa | 1961 | 450 | 54.9 m | |
| OVERFLOW CLANTON CREEK | Iowa | 1932 | 450 | 38.7 m | |
| MUD CREEK | Iowa | 1970 | 450 | 45.7 m | |
| RALSTON CREEK | Iowa | 1935 | 449 | 19.8 m | |
| DRAINAGE DITCH 97 | Iowa | 1968 | 447 | 7.9 m | |
| EAST BOYER RIVER | Iowa | 1958 | 443 | 47.2 m | |
| BRUSH CREEK | Iowa | 1957 | 442 | 44.2 m | |
| WINNEBAGO RIVER | Iowa | 1964 | 442 | 66.8 m | |
| N. FORK LONG CREEK | Iowa | 1961 | 440 | 25.0 m | |
| WHITE BREAST CREEK | Iowa | 1957 | 440 | 62.2 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.