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 |
|---|---|---|---|---|---|
| OVER ABANDON RR | Iowa | 1900 | 387 | 33.5 m | |
| DRAINAGE | Iowa | 1925 | 383 | 8.8 m | |
| BACON CREEK | Iowa | 1958 | 383 | 35.1 m | |
| LOWE RUN | Iowa | 1928 | 380 | 7.6 m | |
| SMALL DRY RUN | Iowa | 1920 | 380 | 16.3 m | |
| BIG CEDAR CK DD #41 | Iowa | 1969 | 379 | 9.8 m | |
| WELDON RIVER | Iowa | 1958 | 379 | 77.4 m | |
| UNNAMED CREEK | Iowa | 1961 | 379 | 23.5 m | |
| UNNAMED STREAM | Iowa | 1961 | 379 | 23.8 m | |
| CREEK | Iowa | 1962 | 379 | 6.4 m | |
| DEER CREEK | Iowa | 1968 | 379 | 23.5 m | |
| SMALL | Iowa | 1900 | 379 | 6.4 m | |
| WATERWAY | Iowa | 1900 | 379 | 7.6 m | |
| DRAINAGE DITCH 9-13 | Iowa | 1970 | 379 | 13.7 m | |
| GRAND RIVER | Iowa | 1940 | 379 | 55.8 m | |
| RAILROAD CREEK | Iowa | 1900 | 377 | 13.1 m | |
| LINDNER CREEK | Iowa | 1969 | 376 | 23.9 m | |
| SINK CREEK | Iowa | 1900 | 373 | 6.1 m | |
| SOUTH FORK IOWA RIVER | Iowa | 1964 | 373 | 39.0 m | |
| BRANCH YELLOW RIVER | Iowa | 1922 | 373 | 6.7 m | |
| SMALL STREAM | Iowa | 1970 | 373 | 31.4 m | |
| SMALL STREAM | Iowa | 1969 | 373 | 23.5 m | |
| WEST FORK CEDAR RIVER | Iowa | 1970 | 373 | 150.0 m | |
| HONEY CREEK | Iowa | 1967 | 373 | 26.8 m | |
| WOLF CREEK BRANCH | Iowa | 1972 | 373 | 9.8 m | |
| CREEK | Iowa | 1900 | 373 | 6.7 m | |
| ROCK CREEK | Iowa | 1985 | 370 | 31.4 m | |
| N SKUNK RIVER | Iowa | 1966 | 370 | 61.6 m | |
| OVER UP RR | Iowa | 1961 | 370 | 46.6 m | |
| BONNELL CREEK | Iowa | 1949 | 370 | 31.1 m | |
| N SKUNK RIVER OVERFLOW | Iowa | 1961 | 370 | 54.3 m | |
| BIG CREEK | Iowa | 1962 | 369 | 39.0 m | |
| UNNAMED CREEK | Iowa | 1900 | 369 | 7.0 m | |
| KANARANZI CREEK | Iowa | 1959 | 369 | 61.6 m | |
| LITTLE SIOUX RIVER | Iowa | 1954 | 369 | 115.2 m | |
| LITTLE ROCK RIVER | Iowa | 1955 | 369 | 61.0 m | |
| BEAVER CREEK | Iowa | 1973 | 369 | 27.7 m | |
| LINN CR | Iowa | 1956 | 369 | 33.5 m | |
| DRAINAGE DITCH | Iowa | 1960 | 369 | 39.9 m | |
| BRANCH MAPLE RIVER | Iowa | 1970 | 369 | 23.5 m | |
| BIG MUDDY CREEK | Iowa | 1963 | 369 | 31.4 m | |
| SMALL STREAM | Iowa | 1990 | 369 | 7.9 m | |
| SHELLROCK RIVER | Iowa | 1958 | 363 | 55.5 m | |
| SALT CREEK | Iowa | 1969 | 363 | 70.1 m | |
| SO BRANCH SALT CREEK | Iowa | 1969 | 363 | 39.3 m | |
| SMALL STREAM | Iowa | 1924 | 361 | 10.4 m | |
| BNSF RR | Iowa | 1936 | 360 | 62.2 m | |
| OVER UP RR | Iowa | 1936 | 360 | 62.2 m | |
| LAKE CR. | Iowa | 1978 | 359 | 39.0 m | |
| E FORK DES MOINES RIVER | Iowa | 1973 | 359 | 38.9 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.