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.