Poor Condition Bridges in Montana
388 bridges rated Poor condition in Montana. 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 388 such bridges in Montana.
| Bridge | State | Condition | Year Built | ADT | Length |
|---|---|---|---|---|---|
| INT MONIDA S 509 | Montana | 1959 | 1,771 | 36.0 m | |
| SKALKAHO CREEK 053 | Montana | 1941 | 1,713 | 23.8 m | |
| TOBACCO RIVER | Montana | 1971 | 1,699 | 93.2 m | |
| IRRIGATION CANAL | Montana | 1970 | 1,635 | 7.0 m | |
| NEVADA CREEK | Montana | 1936 | 1,594 | 17.6 m | |
| PEDESTRIAN UNDERPASS | Montana | 1972 | 1,548 | 14.0 m | |
| RR | Montana | 1957 | 1,537 | 96.0 m | |
| SWAN RIVER 110 | Montana | 1911 | 1,503 | 36.6 m | |
| DRAINAGE | Montana | 1970 | 1,452 | 6.4 m | |
| STOCKPASS | Montana | 1949 | 1,432 | 6.4 m | |
| RR | Montana | 1959 | 1,397 | 56.0 m | |
| SEP WEST HILL-I 15 127 | Montana | 1967 | 1,364 | 97.5 m | |
| CLARK FORK | Montana | 1966 | 1,354 | 91.7 m | |
| DRAINAGE | Montana | 1973 | 1,351 | 13.5 m | |
| BAKER CREEK | Montana | 1967 | 1,287 | 30.9 m | |
| LOST CREEK | Montana | 1953 | 1,246 | 17.7 m | |
| DRAINAGE | Montana | 1939 | 1,067 | 17.6 m | |
| UNSTABLE SLOPE | Montana | 1981 | 1,013 | 79.2 m | |
| BLACKTAIL CREEK | Montana | 1965 | 1,012 | 44.2 m | |
| RR 061 | Montana | 1932 | 1,001 | 34.4 m | |
| MISSOURI RIVER | Montana | 1962 | 930 | 215.8 m | |
| DEMPSEY CREEK 059 | Montana | 1930 | 916 | 19.5 m | |
| BELT CREEK | Montana | 1968 | 833 | 50.6 m | |
| MISSOURI RIVER OVERFLOW | Montana | 1950 | 818 | 85.3 m | |
| LOLO CREEK | Montana | 1957 | 799 | 27.1 m | |
| BITTERROOT RIVER 020 | Montana | 1984 | 746 | 27.4 m | |
| BITTERROOT RIVER 017 | Montana | 1984 | 746 | 18.3 m | |
| S FORK AMERICAN FORK | Montana | 1941 | 706 | 8.8 m | |
| PIPE CREEK | Montana | 1987 | 702 | 21.9 m | |
| BULL RIVER | Montana | 1960 | 692 | 23.5 m | |
| DRAINAGE | Montana | 1939 | 680 | 23.3 m | |
| DRAINAGE | Montana | 1939 | 680 | 26.4 m | |
| CEMETERY COULEE | Montana | 1939 | 680 | 17.8 m | |
| RYE CREEK | Montana | 1947 | 661 | 17.6 m | |
| FISH CREEK | Montana | 1942 | 661 | 34.7 m | |
| MISSOURI RIVER | Montana | 1959 | 655 | 212.7 m | |
| PINKHAM CREEK | Montana | 1971 | 612 | 63.4 m | |
| RR | Montana | 1936 | 612 | 43.6 m | |
| CADETTE CREEK | Montana | 1971 | 612 | 29.6 m | |
| GALLATIN RIVER 084 | Montana | 1919 | 569 | 43.3 m | |
| TWO LEGGINS CANAL 0 | Montana | 1931 | 564 | 10.1 m | |
| POPLAR RIVER 015 | Montana | 1985 | 563 | 31.9 m | |
| INT MIDWAY I 15 | Montana | 1972 | 540 | 106.4 m | |
| SURPRISE DITCH 060 | Montana | 1918 | 537 | 8.5 m | |
| WILLIAMS COULEE 007 | Montana | 1930 | 507 | 23.6 m | |
| MILES CREEK 037 | Montana | 1929 | 507 | 17.8 m | |
| COTTONWOOD CREEK 083 | Montana | 1928 | 507 | 52.6 m | |
| MACKS CREEK 038 | Montana | 1929 | 507 | 12.0 m | |
| MISSOURI RIVER 054 | Montana | 1933 | 484 | 154.5 m | |
| RED LODGE CREEK | Montana | 1953 | 481 | 8.2 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.