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 |
|---|---|---|---|---|---|
| YATES CREEK | Montana | Fair | 2000 | 15.8 m | 3,592 |
| YATES CREEK | Montana | Fair | 1962 | 9.9 m | 3,592 |
| WHITEFISH RIVER 109 | Montana | Fair | 1979 | 55.5 m | 3,565 |
| INT EMERSON JCT-RR | Montana | Good | 1967 | 115.4 m | 3,561 |
| INT EMERSON JCT-RR | Montana | Good | 1967 | 115.4 m | 3,561 |
| SEP RED HILL ROAD | Montana | Fair | 1978 | 23.8 m | 3,559 |
| ST. REGIS RIVER | Montana | Fair | 1983 | 75.0 m | 3,559 |
| INT ST. REGIS | Montana | Fair | 1983 | 37.9 m | 3,559 |
| INT ST. REGIS | Montana | Fair | 1983 | 37.9 m | 3,559 |
| ST. REGIS RIVER | Montana | Fair | 1983 | 74.3 m | 3,559 |
| CLARK FORK RVR-RR-LOCAL | Montana | Fair | 1982 | 268.4 m | 3,559 |
| SEP RED HILL ROAD | Montana | Fair | 1978 | 23.8 m | 3,559 |
| CLARK FORK RVR-RR-LOCAL | Montana | Fair | 1982 | 274.9 m | 3,559 |
| INT SLOWAY | Montana | Good | 1978 | 39.0 m | 3,559 |
| CLARK FORK RVR-LOCAL RD | Montana | Fair | 1982 | 391.0 m | 3,559 |
| INT SLOWAY | Montana | Fair | 1978 | 39.0 m | 3,559 |
| SEP SOUTHSIDE ROAD | Montana | Fair | 1984 | 23.8 m | 3,559 |
| CLARK FORK RVR-LOCAL RD | Montana | Fair | 1984 | 348.9 m | 3,559 |
| SEP SOUTHSIDE ROAD | Montana | Fair | 1984 | 23.8 m | 3,559 |
| RR | Montana | Fair | 1960 | 95.4 m | 3,539 |
| CUT BANK CREEK | Montana | Fair | 2007 | 134.6 m | 3,523 |
| LITTLE BLACKFOOT RIVER | Montana | Fair | 1988 | 21.9 m | 3,430 |
| RR | Montana | Good | 1996 | 56.7 m | 3,428 |
| RR | Montana | Fair | 1936 | 252.3 m | 3,404 |
| LAKE CREEK | Montana | Fair | 1989 | 53.3 m | 3,377 |
| INT CIRCLE-RR-7M CR | Montana | Fair | 1969 | 235.5 m | 3,373 |
| DRY CREEK | Montana | Fair | 1969 | 43.8 m | 3,373 |
| DRY CREEK | Montana | Fair | 1969 | 43.8 m | 3,373 |
| ROSS FORK CREEK | Montana | Good | 1971 | 54.6 m | 3,335 |
| DAWKINS BRANCH | Montana | Good | 2021 | 6.1 m | 3,335 |
| CLARK FORK RIVER | Montana | Fair | 1940 | 36.6 m | 3,314 |
| MAIN IRRIGATION CANAL | Montana | Good | 1968 | 7.6 m | 3,311 |
| MILK RIVER | Montana | Poor | 1964 | 65.2 m | 3,311 |
| S PONDERA COULEE | Montana | Fair | 1964 | 14.3 m | 3,248 |
| TEN MILE CREEK 113 | Montana | Good | 2000 | 22.7 m | 3,235 |
| PARMENTER CREEK | Montana | Good | 1970 | 7.9 m | 3,226 |
| CEDAR CREEK | Montana | Fair | 1989 | 15.8 m | 3,226 |
| LITTLE BLACKFOOT RIVER | Montana | Fair | 1982 | 36.0 m | 3,217 |
| LITTLE BLACKFOOT RIV-RR | Montana | Fair | 2009 | 227.1 m | 3,217 |
| SEP I 90 | Montana | Poor | 1959 | 139.3 m | 3,188 |
| SEP SILVER AVE-BASIN CR | Montana | Fair | 1985 | 61.3 m | 3,182 |
| BOULDER RIVER | Montana | Fair | 1985 | 32.6 m | 3,182 |
| RED ROCK CREEK | Montana | Good | 1984 | 6.6 m | 3,182 |
| BOULDER RIVER | Montana | Fair | 1985 | 51.2 m | 3,182 |
| BOULDER RIVER | Montana | Fair | 1985 | 38.1 m | 3,182 |
| BOULDER RIVER | Montana | Fair | 1985 | 37.5 m | 3,182 |
| BOULDER RIVER | Montana | Fair | 1985 | 31.4 m | 3,182 |
| BOULDER RIVER | Montana | Fair | 1985 | 32.9 m | 3,182 |
| FERN CREEK | Montana | Good | 1990 | 14.0 m | 3,167 |
| SEP COUNTY ROAD | Montana | Good | 1969 | 24.1 m | 3,145 |
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.