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 |
|---|---|---|---|---|---|
| PILOT CREEK | Iowa | 1970 | 439 | 23.8 m | |
| LITTLE MAPLE RIVER | Iowa | 1971 | 439 | 23.8 m | |
| MORGAN CREEK | Iowa | 2000 | 439 | 36.6 m | |
| BRANCH SALT CREEK | Iowa | 1970 | 432 | 39.0 m | |
| CRANE CREEK | Iowa | 1966 | 432 | 78.3 m | |
| LITTLE ASHER CR | Iowa | 1968 | 432 | 38.7 m | |
| S SKUNK RIVER | Iowa | 1967 | 430 | 106.7 m | |
| SPRING CREEK | Iowa | 1959 | 430 | 23.8 m | |
| ROCK CREEK | Iowa | 1985 | 430 | 31.4 m | |
| WEST FORK LITTLE SIOUX | Iowa | 1955 | 429 | 65.2 m | |
| LIZARD CK DD #54 | Iowa | 1964 | 429 | 17.4 m | |
| SMALL CREEK | Iowa | 1900 | 429 | 6.4 m | |
| BR LITTLE BEAR CREEK | Iowa | 1929 | 422 | 11.6 m | |
| WELDON RIVER | Iowa | 1957 | 421 | 54.0 m | |
| SOUTH WYACONDAH DITCH | Iowa | 1974 | 420 | 46.0 m | |
| ANSON CREEK | Iowa | 1979 | 418 | 11.0 m | |
| SMALL STREAM | Iowa | 1938 | 417 | 6.4 m | |
| FIELD DRAINAGE DITCH | Iowa | 1951 | 417 | 7.3 m | |
| FIELD DRAINAGE DITCH | Iowa | 1951 | 417 | 7.3 m | |
| SMALL CREEK | Iowa | 1965 | 417 | 10.4 m | |
| MIDDLE NODAWAY | Iowa | 1939 | 415 | 73.2 m | |
| BRANCH BLACK HAWK CREEK | Iowa | 1973 | 412 | 17.7 m | |
| BLACK HAWK CREEK | Iowa | 1973 | 412 | 75.0 m | |
| CREEK | Iowa | 1964 | 409 | 6.4 m | |
| UP RAILROAD | Iowa | 1948 | 406 | 36.9 m | |
| DRAINAGE TO CAMP CREEK | Iowa | 1983 | 405 | 24.1 m | |
| CREEK | Iowa | 1962 | 403 | 8.3 m | |
| BAILEY CREEK | Iowa | 1956 | 403 | 37.2 m | |
| SMALL CREEK | Iowa | 1968 | 403 | 18.6 m | |
| DRY BRANCH CREEK | Iowa | 1964 | 403 | 25.3 m | |
| CREEK | Iowa | 1953 | 403 | 11.6 m | |
| STONY CREEK | Iowa | 1958 | 400 | 31.1 m | |
| N FORK MAQUOKETA RIVER | Iowa | 1952 | 400 | 97.5 m | |
| STONY FORK | Iowa | 1969 | 400 | 8.8 m | |
| SMALL STREAM | Iowa | 1964 | 400 | 6.4 m | |
| ROCK RIVER | Iowa | 1970 | 399 | 106.1 m | |
| EAST NODAWAY RIVER | Iowa | 1955 | 399 | 54.6 m | |
| CREEK | Iowa | 1939 | 399 | 13.6 m | |
| RAPID CR | Iowa | 1960 | 398 | 12.2 m | |
| UPPER IOWA | Iowa | 1950 | 393 | 76.8 m | |
| UPPER IOWA | Iowa | 1950 | 393 | 7.6 m | |
| UPPER IOWA | Iowa | 1949 | 393 | 16.2 m | |
| BRUSH CREEK | Iowa | 1927 | 393 | 24.4 m | |
| OVERFLOW | Iowa | 1950 | 393 | 24.7 m | |
| UPPER IOWA | Iowa | 1949 | 393 | 25.3 m | |
| BRANCH BEAVER CREEK | Iowa | 1966 | 393 | 18.9 m | |
| FOUR MILE CREEK | Iowa | 1950 | 392 | 21.3 m | |
| SMALL | Iowa | 1978 | 390 | 24.1 m | |
| HOG BRANCH | Iowa | 1975 | 390 | 12.8 m | |
| BACON CREEK | Iowa | 1968 | 390 | 46.6 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.