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 |
|---|---|---|---|---|---|
| WOLF LODGE CREEK | Idaho | 1934 | 150 | 26.5 m | |
| OROFINO CREEK | Idaho | 1958 | 140 | 13.1 m | |
| BIG WILLOW CREEK | Idaho | 1962 | 130 | 21.6 m | |
| W.FK.ST MARIES RIVER | Idaho | 1973 | 130 | 9.1 m | |
| C CANAL | Idaho | 1962 | 110 | 7.9 m | |
| I 90;MILL ROAD IC | Idaho | 1963 | 110 | 73.2 m | |
| UPPER CROOKED RIVER | Idaho | 1965 | 110 | 7.9 m | |
| BEAR RIVER | Idaho | 1972 | 100 | 30.5 m | |
| BIG CREEK TRESTLE | Idaho | 1912 | 100 | 22.6 m | |
| JORDAN CREEK | Idaho | 1993 | 100 | 9.8 m | |
| YANKEE FORK | Idaho | 1992 | 100 | 9.1 m | |
| ELK CREEK TRESTLE | Idaho | 1912 | 100 | 25.9 m | |
| AGATHA CREEK TRESTLE | Idaho | 1912 | 100 | 34.1 m | |
| HORNET CREEK | Idaho | 1949 | 100 | 12.2 m | |
| ANDERSON CREEK | Idaho | 1983 | 100 | 9.1 m | |
| SQUAW CREEK | Idaho | 1960 | 100 | 7.3 m | |
| JORDAN CREEK | Idaho | 1957 | 100 | 8.1 m | |
| BLACK PRINCE TRESTLE | Idaho | 1912 | 100 | 42.7 m | |
| ELDORADO CREEK | Idaho | 1967 | 99 | 9.8 m | |
| SUCCOR CREEK | Idaho | 1930 | 90 | 28.7 m | |
| N.FK.PAYETTE RIVER | Idaho | 1959 | 90 | 73.2 m | |
| POTLATCH R(ARROW JCT BR) | Idaho | 1920 | 90 | 39.9 m | |
| ROAD CREEK | Idaho | 2022 | 90 | 12.2 m | |
| THOUSAND SPRINGS CREEK | Idaho | 1926 | 80 | 7.9 m | |
| JIM FORD CREEK | Idaho | 1965 | 80 | 15.8 m | |
| ST ANTHONY CANAL | Idaho | 1971 | 70 | 7.9 m | |
| I 84;VINYARD RD GS | Idaho | 1965 | 70 | 67.1 m | |
| M.FK.WEISER RIVER | Idaho | 1957 | 70 | 9.8 m | |
| BUTTE MARKET LAKE CANAL | Idaho | 1962 | 61 | 18.3 m | |
| SALMON RIVER;SE.CLAYTON | Idaho | 1930 | 60 | 46.3 m | |
| SILVER CREEK | Idaho | 1978 | 60 | 19.8 m | |
| TRAIL CREEK | Idaho | 1995 | 60 | 7.6 m | |
| VINSON WASH | Idaho | 1930 | 60 | 11.0 m | |
| GRANDVIEW IRRIGATION CNL | Idaho | 1991 | 60 | 7.9 m | |
| HENRYS FK.SNAKE R;FRITZ | Idaho | 1967 | 50 | 60.0 m | |
| PORTNEUF MARSH VAL.CNL | Idaho | 1968 | 50 | 8.2 m | |
| CHESTERFIELD CANAL | Idaho | 2005 | 50 | 14.0 m | |
| LEWISVILLE CANAL | Idaho | 1960 | 50 | 11.9 m | |
| MILNER GOODING CANAL | Idaho | 1940 | 50 | 27.4 m | |
| EAST MAIN CANAL | Idaho | 1950 | 50 | 9.8 m | |
| MILNER GOODING CANAL | Idaho | 1940 | 50 | 24.1 m | |
| EAST MAIN CANAL | Idaho | 1977 | 50 | 11.3 m | |
| CAMAS CREEK | Idaho | 1981 | 50 | 9.8 m | |
| WEISER RIVER | Idaho | 1988 | 50 | 25.9 m | |
| LEMHI RIVER(BAGLEY BR) | Idaho | 1991 | 50 | 22.6 m | |
| NOBLE DRAIN | Idaho | 1955 | 50 | 7.9 m | |
| MUD CREEK | Idaho | 1986 | 50 | 12.5 m | |
| SAGE CREEK | Idaho | 1965 | 50 | 9.4 m | |
| JIM FORD CREEK | Idaho | 1975 | 50 | 15.2 m | |
| ST JOE RIVER | Idaho | 1934 | 50 | 53.0 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.