Poor Condition Bridges in Idaho
250 bridges rated Poor condition in Idaho. 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 250 such bridges in Idaho.
| Bridge | State | Condition | Year Built | ADT | Length |
|---|---|---|---|---|---|
| DRY CREEK | Idaho | 1930 | 30 | 18.9 m | |
| CLOVER CREEK | Idaho | 1985 | 30 | 12.5 m | |
| EAST MAIN CANAL | Idaho | 1965 | 30 | 12.2 m | |
| WILDHORSE RIVER | Idaho | 1908 | 30 | 14.6 m | |
| FALL CREEK | Idaho | 1987 | 30 | 15.8 m | |
| BLACK WARRIOR CREEK | Idaho | 1975 | 30 | 9.4 m | |
| QUEENS RIVER NO. 2 | Idaho | 1962 | 30 | 19.2 m | |
| M.FK.BOISE RIVER(KIRBY) | Idaho | 1991 | 30 | 41.8 m | |
| COTTONWOOD CREEK | Idaho | 1960 | 30 | 9.1 m | |
| HANGMAN CREEK | Idaho | 1981 | 30 | 17.0 m | |
| N.FK.EAST RIVER | Idaho | 1939 | 30 | 37.2 m | |
| RUBY CREEK(#4) | Idaho | 1970 | 30 | 7.3 m | |
| HENRYS FK SNAKE RIVER | Idaho | 1925 | 30 | 47.9 m | |
| MORES CREEK | Idaho | 1962 | 30 | 7.9 m | |
| JOHNSON CREEK | Idaho | 1977 | 30 | 21.3 m | |
| Milner Gooding Canal | Idaho | 1960 | 25 | 21.3 m | |
| Dietrich Main Canal | Idaho | 1987 | 25 | 19.6 m | |
| Twin Falls N. Side Canal | Idaho | 1964 | 25 | 9.6 m | |
| NAPIAS CREEK | Idaho | 1953 | 25 | 7.9 m | |
| S.FK.CDA R.;EB OFF RAMP | Idaho | 1964 | 20 | 53.3 m | |
| LITTLE WOOD RIVER | Idaho | 1930 | 20 | 10.4 m | |
| N. GOODING CANAL | Idaho | 1975 | 20 | 8.5 m | |
| MILNER GOODING CANAL | Idaho | 1977 | 20 | 24.1 m | |
| LITTLE SALMON RIVER | Idaho | 1923 | 20 | 19.2 m | |
| WEISER RIVER | Idaho | 1982 | 20 | 18.6 m | |
| SHAFER CREEK | Idaho | 1914 | 20 | 11.3 m | |
| REYNOLDS CREEK | Idaho | 1960 | 20 | 9.8 m | |
| CRANE CREEK | Idaho | 1955 | 20 | 18.6 m | |
| L.W.BR.PRIEST R;MOORE CR | Idaho | 1980 | 20 | 12.2 m | |
| CAMAS CREEK | Idaho | 1972 | 20 | 9.1 m | |
| ELK CREEK | Idaho | 1961 | 20 | 7.3 m | |
| ELK CREEK | Idaho | 1961 | 20 | 7.4 m | |
| MIDDLE FORK BOISE RIVER | Idaho | 1957 | 20 | 42.8 m | |
| GRIMES CREEK | Idaho | 1954 | 20 | 16.3 m | |
| THIRD FK.CHIEF EAGLE EYE | Idaho | 1963 | 20 | 12.2 m | |
| SLOUGH BRIDGE | Idaho | 1912 | 15 | 29.6 m | |
| TROUT CREEK | Idaho | 1912 | 15 | 27.1 m | |
| SOUTH FORK BOISE RIVER | Idaho | 1989 | 12 | 21.3 m | |
| RICHFIELD CANAL | Idaho | 1932 | 10 | 31.1 m | |
| BIG WOOD RIVER | Idaho | 1945 | 10 | 28.0 m | |
| CROSSCUT CANAL | Idaho | 1937 | 10 | 10.4 m | |
| MARYSVILLE CANAL | Idaho | 1976 | 10 | 7.6 m | |
| N. BRANCH FALL RIVER CNL | Idaho | 1932 | 10 | 7.3 m | |
| FALL RIVER OVERFLOW | Idaho | 1932 | 10 | 7.3 m | |
| SOUTH FORK SALMON RIVER | Idaho | 1934 | 10 | 94.5 m | |
| SAVAGE CREEK | Idaho | 2006 | 10 | 13.5 m | |
| BEAR VALLEY CREEK | Idaho | 1960 | 10 | 7.5 m | |
| U CANAL | Idaho | 1934 | 5 | 46.3 m | |
| LITTLE WOOD RIVER | Idaho | 1965 | 5 | 16.2 m | |
| BEAR CREEK | Idaho | 1983 | 5 | 11.0 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.