Browse Bridge Database
5,235 bridges in the FHWA National Bridge Inventory in Montana.
National Bridge Inventory Database
Browse 5,235 bridges from the Federal Highway Administration National Bridge Inventory. Filter by state, condition rating, or search by name and location.
| Bridge | Location | Condition | Year Built | Length | ADT |
|---|---|---|---|---|---|
| HARLEY CREEK | Montana | Fair | 1953 | 7.6 m | 50 |
| JEFFERSON CREEK | Montana | Poor | 1957 | 7.5 m | 50 |
| MOOSE CREEK | Montana | Fair | 1956 | 7.6 m | 50 |
| MOOSE CREEK | Montana | Fair | 1956 | 7.6 m | 50 |
| FOUR MILE CREEK | Montana | Fair | 1972 | 7.5 m | 50 |
| FOUR MILE CREEK | Montana | Poor | 1973 | 7.5 m | 50 |
| FOUR MILE CREEK | Montana | Poor | 1973 | 7.5 m | 50 |
| MOOSE CREEK | Montana | Poor | 1956 | 8.7 m | 50 |
| MOOSE CREEK | Montana | Fair | 1956 | 10.2 m | 50 |
| MOOSE CREEK | Montana | Fair | 1956 | 10.2 m | 50 |
| CHAMBERLAIN CREEK | Montana | Good | 2002 | 12.2 m | 50 |
| LOWER HOLSTROM DITCH | Montana | Good | 2017 | 8.8 m | 50 |
| TROUT CREEK | Montana | Fair | 1950 | 18.3 m | 50 |
| NORTH FORK LITTLE JOE | Montana | Good | 2023 | 29.4 m | 50 |
| ROCK CR | Montana | Fair | 1975 | 24.4 m | 50 |
| LOLO CR | Montana | Fair | 1936 | 14.1 m | 50 |
| GOLD CR | Montana | Fair | 1983 | 11.0 m | 50 |
| ROCK CREEK | Montana | Poor | 1982 | 15.2 m | 50 |
| CLARK FORK | Montana | Fair | 1965 | 64.9 m | 50 |
| ROCK CREEK | Montana | Poor | 1961 | 36.5 m | 50 |
| LOLO CR | Montana | Fair | 1960 | 14.2 m | 50 |
| LOLO CREEK | Montana | Fair | 1946 | 14.8 m | 50 |
| LOLO CR | Montana | Fair | 1958 | 24.3 m | 50 |
| SO FK LOLO CR | Montana | Fair | 1981 | 11.2 m | 50 |
| LOLO CR | Montana | Fair | 1964 | 15.4 m | 50 |
| RANCH CR | Montana | Fair | 1958 | 7.3 m | 50 |
| RATTLESNAKE CREEK | Montana | Fair | 1981 | 11.2 m | 50 |
| WEST FORK GOLD CREEK | Montana | Fair | 1997 | 12.2 m | 50 |
| HOGBACK CREEK | Montana | Fair | 2008 | 7.3 m | 50 |
| S FK FISH CREEK | Montana | Poor | 1973 | 15.4 m | 50 |
| S FK FISH CREEK | Montana | Poor | 1966 | 12.3 m | 50 |
| S FK FISH CREEK | Montana | Poor | 1965 | 9.9 m | 50 |
| SOUTH FORK FISH CR | Montana | Fair | 1973 | 12.3 m | 50 |
| NINEMILE CR | Montana | Fair | 1979 | 7.5 m | 50 |
| NINEMILE CR. | Montana | Fair | 1968 | 12.4 m | 50 |
| NINEMILE CR | Montana | Fair | 1970 | 9.9 m | 50 |
| W FK FISH CREEK | Montana | Poor | 1966 | 18.7 m | 50 |
| DEER CR | Montana | Good | 2004 | 9.4 m | 50 |
| ARCHIBALD CR | Montana | Good | 2004 | 9.1 m | 50 |
| S FK FISH CREEK | Montana | Good | 1999 | 26.8 m | 50 |
| W F THOMPSON RIV | Montana | Fair | 1935 | 23.8 m | 50 |
| FISHTRAP CR | Montana | Fair | 1963 | 7.5 m | 50 |
| W FORK SWAMP CR | Montana | Fair | 1970 | 7.7 m | 50 |
| FISHTRAP CREEK | Montana | Fair | 1954 | 8.8 m | 50 |
| RADIO CR | Montana | Fair | 1955 | 10.0 m | 50 |
| FISHTRAP CREEK | Montana | Fair | 1957 | 7.5 m | 50 |
| WILKES CREEK | Montana | Good | 1973 | 7.5 m | 50 |
| W FK SWAMP CR | Montana | Fair | 1965 | 7.6 m | 50 |
| STONY LAKE CREEK | Montana | Good | 2015 | 11.3 m | 50 |
| W FK CLEARWATER | Montana | Good | 2008 | 23.3 m | 50 |
Frequently Asked Questions
The National Bridge Inventory (NBI) is a federal database maintained by the Federal Highway Administration containing inspection data for all bridges on public roads in the U.S. with a span of more than 20 feet. Bridge owners must inspect each structure at least every 24 months.
ADT stands for Average Daily Traffic, the average number of vehicles crossing the bridge per day. Bridges are sorted by ADT by default because high-traffic bridges in poor condition pose the greatest risk to the most people.
Yes. Use the search field above to find bridges by name, location, or features crossed. You can also combine the search with state and condition filters to narrow your results.