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.