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.