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.