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 |
|---|---|---|---|---|---|
| PEDESTRIAN/BIKE PATH | Idaho | 1971 | 31,250 | 39.6 m | |
| SAND CREEK | Idaho | 1994 | 27,500 | 13.1 m | |
| CITY ST;UPRR;CALDWELL OP | Idaho | 1956 | 19,500 | 189.3 m | |
| IDAHO CANAL | Idaho | 1984 | 18,000 | 22.9 m | |
| I15B;UPRR;S.BLACKFOOT IC | Idaho | 1961 | 13,750 | 119.5 m | |
| I15B;UPRR;S.BLACKFOOT IC | Idaho | 1961 | 13,750 | 119.5 m | |
| ROCK CREEK | Idaho | 1959 | 11,500 | 11.9 m | |
| MAIN STREET GS | Idaho | 1962 | 7,750 | 37.8 m | |
| MAIN STREET GS | Idaho | 1962 | 7,750 | 37.8 m | |
| I 15B;W.INKOM IC | Idaho | 1962 | 7,750 | 34.7 m | |
| SALMON RIVER;SALMON BR. | Idaho | 1926 | 7,300 | 133.5 m | |
| BLACKFOOT RIVER | Idaho | 1936 | 7,000 | 32.3 m | |
| NEW YORK CANAL | Idaho | 1964 | 7,000 | 34.7 m | |
| SNAKE RIVER | Idaho | 1936 | 6,900 | 147.2 m | |
| RIDENBAUGH CANAL | Idaho | 1954 | 6,700 | 21.6 m | |
| BOISE RIVER(BARBER BR) | Idaho | 1954 | 6,700 | 96.0 m | |
| PARADISE CREEK | Idaho | 1992 | 6,400 | 8.8 m | |
| ROCK CREEK | Idaho | 1973 | 6,000 | 6.4 m | |
| SPRING CREEK | Idaho | 1975 | 5,600 | 13.1 m | |
| OLD INDIAN CREEK CHANNEL | Idaho | 1966 | 5,400 | 11.9 m | |
| SNAKE RIVER;PAYETTE BR. | Idaho | 1953 | 5,100 | 210.0 m | |
| BLACKFOOT CANAL | Idaho | 1951 | 4,600 | 13.1 m | |
| UPRR;N.FK.PAYETTE RIVER | Idaho | 1933 | 4,100 | 125.3 m | |
| BUNCO RD; US 95 IC | Idaho | 2012 | 3,800 | 83.8 m | |
| GIBSON LATERAL CANAL | Idaho | 1923 | 3,800 | 8.5 m | |
| PRIEST RIVER | Idaho | 1962 | 3,100 | 107.3 m | |
| DRY CREEK | Idaho | 1934 | 2,900 | 18.3 m | |
| PORTNEUF RIVER | Idaho | 1969 | 2,800 | 14.3 m | |
| UPRR;BICKEL OVERPASS | Idaho | 1936 | 2,500 | 48.2 m | |
| S.FK.CDA R;I-90B ARCH | Idaho | 1940 | 2,300 | 28.7 m | |
| SAND CREEK | Idaho | 1957 | 2,100 | 21.6 m | |
| BOISE RIVER & CANAL | Idaho | 1922 | 2,100 | 118.3 m | |
| INDIAN CREEK | Idaho | 1933 | 2,000 | 11.9 m | |
| S.FK.COEUR DALENE RIVER | Idaho | 1971 | 1,900 | 51.2 m | |
| CO.RD.;STODDARD CREEK IC | Idaho | 1969 | 1,750 | 32.6 m | |
| SNAKE R.(MONTGOMERY BR) | Idaho | 1954 | 1,500 | 292.6 m | |
| PAYETTE RIVER | Idaho | 1959 | 1,400 | 123.1 m | |
| I 86 EB-WB;AIRPORT IC | Idaho | 1968 | 1,300 | 95.1 m | |
| STC 5752;N.FK.CDA RIVER | Idaho | 1930 | 1,200 | 80.5 m | |
| PORTNEUF RIVER | Idaho | 1962 | 1,200 | 13.1 m | |
| S.FK.TETON RIVER | Idaho | 1977 | 1,100 | 45.7 m | |
| BEAR RIVER;E.WESTON BR. | Idaho | 1956 | 1,000 | 53.3 m | |
| M.F.CLWATER R.;E.KOOSKIA | Idaho | 1935 | 980 | 146.6 m | |
| COEUR DALENE RIVER | Idaho | 1951 | 960 | 104.9 m | |
| ENTERPRISE CANAL | Idaho | 1950 | 950 | 7.9 m | |
| BNRR;UPRR & DEEP CREEK | Idaho | 1936 | 900 | 153.0 m | |
| PACK RIVER | Idaho | 1941 | 870 | 29.3 m | |
| GROUSE CREEK | Idaho | 1941 | 870 | 19.8 m | |
| WILLOW CREEK | Idaho | 1983 | 750 | 8.5 m | |
| COEUR DALENE RIVER | Idaho | 1936 | 680 | 100.0 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.