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 |
|---|---|---|---|---|---|
| COEUR DALENE RIVER | Idaho | 1936 | 680 | 100.0 m | |
| C CANAL | Idaho | 1965 | 660 | 7.9 m | |
| MINEAR CREEK | Idaho | 1955 | 630 | 9.1 m | |
| MILNER GOODING CANAL | Idaho | 1965 | 560 | 15.2 m | |
| BOISE RIVER | Idaho | 1954 | 560 | 100.9 m | |
| SALMON R;WHITEBIRD TRUSS | Idaho | 1935 | 550 | 178.3 m | |
| SIRR & UPRR;S.ATHOL OP | Idaho | 1929 | 540 | 55.2 m | |
| BURGESS CANAL | Idaho | 1969 | 510 | 13.7 m | |
| Adams Drainage | Idaho | 1993 | 491 | 11.9 m | |
| WILLOW CREEK | Idaho | 1996 | 490 | 7.3 m | |
| WEISER RIVER | Idaho | 1917 | 490 | 75.9 m | |
| ST MARIES RIVER | Idaho | 1955 | 460 | 32.0 m | |
| C CANAL | Idaho | 1963 | 450 | 9.8 m | |
| HUNT CREEK | Idaho | 1975 | 430 | 7.3 m | |
| CLEARWATER R;LENORE BR. | Idaho | 1935 | 400 | 160.3 m | |
| WILLOW CREEK | Idaho | 1996 | 370 | 9.1 m | |
| BIG DICK CREEK | Idaho | 1909 | 370 | 72.8 m | |
| THORN CREEK | Idaho | 1955 | 360 | 21.9 m | |
| S.FK.COEUR DALENE RIVER | Idaho | 1978 | 360 | 9.8 m | |
| LITTLE HANGMAN CREEK | Idaho | 1977 | 350 | 16.2 m | |
| PINE CREEK | Idaho | 2012 | 350 | 12.3 m | |
| SQUAW CREEK | Idaho | 1960 | 330 | 7.3 m | |
| MILNER GOODING CANAL | Idaho | 1970 | 330 | 23.2 m | |
| SQUAW CREEK | Idaho | 1960 | 330 | 7.3 m | |
| CUB RIVER | Idaho | 1926 | 310 | 15.5 m | |
| T.F.NORTHSIDE MAIN CNL | Idaho | 1970 | 310 | 11.3 m | |
| T.F.NORTHSIDE MAIN CNL | Idaho | 1960 | 310 | 20.4 m | |
| LEMHI RIVER | Idaho | 1948 | 310 | 24.1 m | |
| MYRTLE CREEK | Idaho | 1958 | 300 | 15.8 m | |
| SQUAW CREEK | Idaho | 1960 | 300 | 7.6 m | |
| IDAHO CANAL | Idaho | 2002 | 290 | 12.5 m | |
| RAPID LIGHTNING CREEK | Idaho | 1970 | 280 | 12.5 m | |
| BOULDER CREEK | Idaho | 1978 | 230 | 9.1 m | |
| CANYON CREEK | Idaho | 2012 | 220 | 11.6 m | |
| RED ROCK CREEK | Idaho | 1970 | 200 | 9.4 m | |
| PANTHER CREEK | Idaho | 1980 | 200 | 28.9 m | |
| CAMAS CREEK | Idaho | 1953 | 200 | 13.7 m | |
| C CANAL | Idaho | 1975 | 200 | 8.5 m | |
| LITTLE WOOD RIVER | Idaho | 1920 | 200 | 13.7 m | |
| LITTLE WOOD RIVER | Idaho | 1913 | 200 | 19.2 m | |
| BOULDER CREEK | Idaho | 1966 | 200 | 9.3 m | |
| MILNER GOODING CANAL | Idaho | 1955 | 200 | 23.8 m | |
| ABERDEEN SPRINGFIELD CNL | Idaho | 1964 | 190 | 28.0 m | |
| SNAKE RIVER;SW BLISS BR | Idaho | 1977 | 190 | 57.9 m | |
| WEISER RIVER | Idaho | 1910 | 180 | 92.4 m | |
| LAPWAI CREEK | Idaho | 1935 | 180 | 18.6 m | |
| LITTLE CANYON CREEK | Idaho | 1995 | 170 | 7.3 m | |
| LITTLE CANYON CREEK | Idaho | 1970 | 170 | 15.5 m | |
| I 15;WILLIE ROAD GS | Idaho | 1959 | 160 | 64.6 m | |
| SANTA CREEK | Idaho | 1964 | 150 | 7.5 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.