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 |
|---|---|---|---|---|---|
| SEP COUNTY ROAD | Montana | Fair | 1977 | 23.8 m | 2,188 |
| BEAVERHEAD RIVER | Montana | Fair | 1962 | 52.7 m | 2,185 |
| BEAVERHEAD RIVER | Montana | Fair | 1981 | 52.7 m | 2,185 |
| BEAVERHD R-HIGH BRDG RD | Montana | Fair | 1964 | 122.5 m | 2,185 |
| BEAVERHD R-HIGH BRDG RD | Montana | Fair | 1981 | 136.6 m | 2,185 |
| SEP HIGH BRIDGE RD | Montana | Fair | 1986 | 24.4 m | 2,185 |
| SEP HIGH BRIDGE RD | Montana | Fair | 1986 | 24.4 m | 2,185 |
| BEAVERHEAD RIVER | Montana | Fair | 1964 | 49.7 m | 2,185 |
| BEAVERHEAD RIVER | Montana | Good | 1980 | 46.9 m | 2,185 |
| SEP HIGH BRIDGE RD | Montana | Fair | 1988 | 24.1 m | 2,185 |
| SEP HIGH BRDGE RD | Montana | Fair | 1988 | 24.1 m | 2,185 |
| HOT SPRINGS CREEK | Montana | Fair | 1959 | 15.8 m | 2,181 |
| WILDLIFE CROSSING | Montana | Good | 2019 | 15.1 m | 2,177 |
| THOMPSON RIVER | Montana | Good | 2015 | 133.7 m | 2,177 |
| RR (TRACKS NOT IN USE) | Montana | Fair | 1986 | 66.8 m | 2,176 |
| RR (TRACKS NOT IN USE) | Montana | Fair | 1966 | 70.4 m | 2,176 |
| RR | Montana | Fair | 1955 | 39.3 m | 2,174 |
| YELLOWSTONE RIVER | Montana | Fair | 1955 | 120.1 m | 2,174 |
| INT MISSION I 90 | Montana | Fair | 1962 | 64.3 m | 2,174 |
| SEEPAY CREEK | Montana | Fair | 1969 | 9.4 m | 2,167 |
| ARMELLS CR-RR | Montana | Fair | 1972 | 126.2 m | 2,166 |
| ARMELLS CR-RR | Montana | Good | 1967 | 120.5 m | 2,166 |
| SMITH CREEK-SEP CO RD | Montana | Fair | 1972 | 67.2 m | 2,166 |
| SMITH CREEK-SEP CO RD | Montana | Good | 1967 | 67.2 m | 2,166 |
| MUSSELSHELL RIVER | Montana | Fair | 1959 | 43.6 m | 2,161 |
| FRONT ST-RR | Montana | Fair | 1938 | 116.4 m | 2,161 |
| BIG COULEE CREEK | Montana | Good | 1959 | 30.8 m | 2,161 |
| COUNTY ROAD 119 | Montana | Fair | 1973 | 18.3 m | 2,159 |
| INT CRACKER BOX ROAD | Montana | Fair | 1973 | 42.5 m | 2,159 |
| INT CRACKER BOX ROAD | Montana | Fair | 1973 | 42.5 m | 2,159 |
| COUNTY ROAD 119 | Montana | Fair | 1973 | 18.3 m | 2,159 |
| RATTLESNAKE CREEK 002 | Montana | Good | 1911 | 27.4 m | 2,157 |
| DRAINAGE | Montana | Poor | 1940 | 17.7 m | 2,141 |
| BATTLE CREEK-N FK MILK R | Montana | Good | 1999 | 44.4 m | 2,141 |
| DRAINAGE | Montana | Fair | 1940 | 11.9 m | 2,141 |
| DRAINAGE | Montana | Fair | 1940 | 17.7 m | 2,141 |
| DRAINAGE | Montana | Poor | 1940 | 11.9 m | 2,141 |
| DRAINAGE | Montana | Fair | 1941 | 17.7 m | 2,141 |
| DRAINAGE | Montana | Fair | 1940 | 11.9 m | 2,141 |
| KEEP COOL CREEK | Montana | Good | 1993 | 8.0 m | 2,140 |
| BEAVER CREEK | Montana | Good | 1993 | 6.7 m | 2,140 |
| COTTONWOOD CREEK | Montana | Fair | 1971 | 47.7 m | 2,137 |
| INT DIAMOND RING | Montana | Fair | 1971 | 39.0 m | 2,137 |
| INT DIAMOND RING | Montana | Fair | 1971 | 42.1 m | 2,137 |
| SEP ACCESS ROAD | Montana | Fair | 1971 | 24.1 m | 2,137 |
| SEP MONTANA ROAD | Montana | Fair | 1971 | 23.8 m | 2,137 |
| SEP ACCESS ROAD | Montana | Fair | 1971 | 24.1 m | 2,137 |
| INT POWDER RIVER | Montana | Fair | 1971 | 23.8 m | 2,137 |
| SEP MONTANA ROAD | Montana | Fair | 1971 | 23.8 m | 2,137 |
| POWDER RIVER | Montana | Fair | 1971 | 164.0 m | 2,137 |
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.