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 |
|---|---|---|---|---|---|
| CEDAR CREEK | Montana | Good | 1960 | 51.5 m | 3,825 |
| CLARK FORK RIVER | Montana | Fair | 1967 | 251.7 m | 3,825 |
| RR | Montana | Fair | 1967 | 95.4 m | 3,825 |
| INT SUPERIOR | Montana | Good | 1960 | 46.9 m | 3,825 |
| INT LOZEAU COUNTY ROAD | Montana | Fair | 1967 | 39.0 m | 3,825 |
| CLARK FORK RIVER | Montana | Fair | 1960 | 244.1 m | 3,825 |
| CLARK FORK RIVER | Montana | Fair | 1967 | 230.7 m | 3,825 |
| CLARK FORK RIVER | Montana | Fair | 1966 | 244.1 m | 3,825 |
| RR | Montana | Fair | 1967 | 95.4 m | 3,825 |
| CLARK FORK RIVER | Montana | Fair | 1967 | 230.7 m | 3,825 |
| ROCK CREEK | Montana | Fair | 1974 | 50.0 m | 3,817 |
| INT CLANCY | Montana | Good | 1969 | 36.3 m | 3,787 |
| SEP S HWY 282 | Montana | Fair | 1968 | 41.1 m | 3,787 |
| ABANDONED RR | Montana | Fair | 1969 | 70.4 m | 3,787 |
| ABANDONED RR | Montana | Fair | 1969 | 72.5 m | 3,787 |
| SEP LUMP GULCH ROAD | Montana | Fair | 1969 | 23.8 m | 3,787 |
| SEP LUMP GULCH ROAD | Montana | Fair | 1969 | 24.4 m | 3,787 |
| INT CLANCY | Montana | Fair | 1969 | 36.3 m | 3,787 |
| SEP S HWY 282 | Montana | Fair | 1968 | 41.1 m | 3,787 |
| SEP LEXINGTON ST 016 | Montana | Fair | 1960 | 68.2 m | 3,768 |
| INT TOLUCA COUNTY ROAD | Montana | Fair | 1972 | 41.5 m | 3,736 |
| INT TOLUCA COUNTY ROAD | Montana | Good | 1972 | 41.5 m | 3,736 |
| RR | Montana | Fair | 1972 | 56.1 m | 3,736 |
| RR | Montana | Fair | 1972 | 56.1 m | 3,736 |
| FLY CREEK | Montana | Good | 1972 | 34.8 m | 3,736 |
| FLY CREEK | Montana | Good | 1972 | 35.1 m | 3,736 |
| LOCAL-CREEK-RARUS RR | Montana | Fair | 1961 | 186.9 m | 3,728 |
| LOCAL-CREEK-RARUS RR | Montana | Fair | 1961 | 182.4 m | 3,728 |
| INT HAUGAN | Montana | Fair | 1976 | 36.0 m | 3,724 |
| INT DE BORGIA | Montana | Good | 1976 | 36.0 m | 3,724 |
| ST. REGIS RIVER | Montana | Fair | 1980 | 116.1 m | 3,724 |
| ST. REGIS RIVER | Montana | Fair | 1980 | 122.5 m | 3,724 |
| INT DE BORGIA | Montana | Good | 1976 | 36.0 m | 3,724 |
| INT HAUGAN | Montana | Fair | 1976 | 36.0 m | 3,724 |
| INT DRY CREEK | Montana | Fair | 1983 | 41.0 m | 3,719 |
| CLARK FORK RIVER | Montana | Poor | 1984 | 332.8 m | 3,719 |
| CLARK FORK RIVER | Montana | Fair | 1982 | 332.8 m | 3,719 |
| INT DRY CREEK | Montana | Fair | 1983 | 41.0 m | 3,719 |
| CLARK FORK RIVER | Montana | Fair | 1960 | 189.2 m | 3,719 |
| RR | Montana | Good | 1997 | 61.0 m | 3,716 |
| TIN CUP CREEK | Montana | Good | 1990 | 20.4 m | 3,689 |
| MILK RIVER | Montana | Fair | 1952 | 74.3 m | 3,681 |
| DRAINAGE | Montana | Good | 2011 | 7.9 m | 3,678 |
| LITTLE BOX ELDER CREEK | Montana | Good | 2011 | 35.3 m | 3,678 |
| CALLAHAN CREEK | Montana | Fair | 1989 | 51.5 m | 3,671 |
| IRRIGATION CANAL | Montana | Good | 1997 | 10.3 m | 3,654 |
| IRRIGATION CANAL | Montana | Good | 1997 | 10.9 m | 3,654 |
| ETNA DITCH | Montana | Good | 1997 | 6.7 m | 3,654 |
| BITTERROOT RIVER 010 | Montana | Fair | 1935 | 105.4 m | 3,627 |
| WHITEFISH RIVER 165 | Montana | Fair | 1983 | 28.0 m | 3,615 |
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.