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 |
|---|---|---|---|---|---|
| BEAR CREEK | Iowa | 1950 | 60 | 36.9 m | |
| MIDDLE MINERVA CREEK | Iowa | 1953 | 60 | 18.9 m | |
| CREEK | Iowa | 1975 | 60 | 7.0 m | |
| SMALL STREAM | Iowa | 1930 | 60 | 9.8 m | |
| WEST TARKIO RIVER | Iowa | 1960 | 60 | 39.9 m | |
| BRUSHY FORK CREEK | Iowa | 1925 | 60 | 28.3 m | |
| FIELD STREAM | Iowa | 1946 | 60 | 9.5 m | |
| EAST BR INDIAN CREEK | Iowa | 1922 | 60 | 10.4 m | |
| MUCHAKINOCH CREEK | Iowa | 1951 | 60 | 13.1 m | |
| S. SKUNK RIVER | Iowa | 1948 | 60 | 99.7 m | |
| SMALL STREAM | Iowa | 1928 | 60 | 9.8 m | |
| WATERWAY | Iowa | 1952 | 60 | 64.0 m | |
| DRAINAGE DITCH | Iowa | 1948 | 60 | 10.7 m | |
| SMALL STREAM | Iowa | 1959 | 60 | 7.9 m | |
| CREEK | Iowa | 1950 | 60 | 7.0 m | |
| STREAM | Iowa | 1923 | 60 | 7.9 m | |
| CREEK | Iowa | 1956 | 60 | 9.1 m | |
| PIGEON CREEK | Iowa | 1967 | 60 | 28.0 m | |
| SMALL CREEK | Iowa | 1958 | 60 | 13.4 m | |
| ROCK CREEK | Iowa | 1958 | 60 | 7.9 m | |
| S. BR. BIG CREEK | Iowa | 1957 | 60 | 31.4 m | |
| FLOYD RIVER | Iowa | 1954 | 60 | 59.4 m | |
| STREAM | Iowa | 1920 | 60 | 8.8 m | |
| BR MILL CR | Iowa | 1955 | 60 | 8.2 m | |
| STREAM | Iowa | 1973 | 60 | 6.1 m | |
| STREAM | Iowa | 1940 | 60 | 7.3 m | |
| POT HOLE CREEK | Iowa | 1957 | 60 | 13.4 m | |
| STREAM | Iowa | 1957 | 60 | 17.4 m | |
| NORTH LIZARD CREEK | Iowa | 1970 | 60 | 26.8 m | |
| BRUSH CREEK | Iowa | 1980 | 60 | 22.3 m | |
| TRIB OF LITTLE RIVER | Iowa | 1969 | 60 | 24.4 m | |
| LITTLE TARKIO TRIB | Iowa | 1947 | 60 | 11.6 m | |
| NORTH RIVER | Iowa | 1960 | 60 | 77.4 m | |
| DM RIVER | Iowa | 1911 | 60 | 33.5 m | |
| STREAM | Iowa | 1939 | 60 | 12.8 m | |
| E NISHNABOTNA RIVER | Iowa | 1958 | 60 | 91.4 m | |
| LONG CREEK | Iowa | 1950 | 60 | 37.2 m | |
| SMALL STREAM | Iowa | 1949 | 60 | 10.7 m | |
| COTTONWOOD DRAIN | Iowa | 1953 | 60 | 22.9 m | |
| WEST TARKIO RIVER | Iowa | 1957 | 60 | 54.6 m | |
| TARKIO CREEK | Iowa | 1949 | 60 | 40.2 m | |
| BROWN CR | Iowa | 1961 | 60 | 9.4 m | |
| N FORK LONG CR | Iowa | 1973 | 60 | 14.6 m | |
| NISHNABOTNA | Iowa | 1942 | 60 | 86.6 m | |
| STREAM | Iowa | 1953 | 60 | 21.0 m | |
| STREAM | Iowa | 1952 | 60 | 17.4 m | |
| BOYER RIVER | Iowa | 1916 | 60 | 28.3 m | |
| CEDAR CREEK | Iowa | 1952 | 60 | 92.4 m | |
| STREAM | Iowa | 1967 | 60 | 9.4 m | |
| MIDDLE TARKIO RIVER | Iowa | 1949 | 60 | 78.3 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.