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 |
|---|---|---|---|---|---|
| DRY FORK MARIAS RIVER | Montana | Good | 1972 | 75.3 m | 1,727 |
| DRY FORK MARIAS RIVER | Montana | Good | 1972 | 75.3 m | 1,727 |
| RR | Montana | Good | 1972 | 67.9 m | 1,725 |
| SOUTH FORK MILK RIVER | Montana | Good | 2022 | 22.3 m | 1,718 |
| N FORK CUT BANK CREEK | Montana | Good | 1987 | 43.3 m | 1,718 |
| SKALKAHO CREEK 053 | Montana | Poor | 1941 | 23.8 m | 1,713 |
| HEDGES CANAL 012 | Montana | Fair | 1941 | 8.5 m | 1,713 |
| INT MAIN ST | Montana | Fair | 1976 | 23.2 m | 1,703 |
| INT MAIN ST | Montana | Fair | 1976 | 23.2 m | 1,703 |
| TETON RIVER | Montana | Fair | 1977 | 131.9 m | 1,703 |
| TETON RIVER | Montana | Good | 1977 | 131.9 m | 1,703 |
| TOBACCO RIVER | Montana | Poor | 1971 | 93.2 m | 1,699 |
| YELLOWSTONE RIVER | Montana | Fair | 1938 | 115.8 m | 1,699 |
| FRED BURR CREEK | Montana | Fair | 1931 | 19.2 m | 1,695 |
| SCHOOL SECTION COULEE | Montana | Good | 1970 | 7.2 m | 1,694 |
| BIG SANDY CREEK | Montana | Good | 1990 | 7.3 m | 1,694 |
| BOX ELDER CREEK | Montana | Good | 1969 | 21.8 m | 1,694 |
| WARM SPRINGS CREEK | Montana | Fair | 1931 | 9.8 m | 1,692 |
| ARRASTRA CREEK | Montana | Good | 2008 | 24.0 m | 1,683 |
| BLACKFOOT RIVER | Montana | Fair | 2004 | 59.3 m | 1,674 |
| BEAVER CREEK | Montana | Fair | 1949 | 46.5 m | 1,671 |
| CLOVER CREEK | Montana | Fair | 2020 | 30.9 m | 1,651 |
| BELT CREEK 012 | Montana | Good | 2012 | 46.7 m | 1,650 |
| SHILOH INTERCHANGE | Montana | Good | 2001 | 100.3 m | 1,646 |
| SWAMP CREEK | Montana | Good | 2013 | 22.5 m | 1,642 |
| SWAMP CREEK | Montana | Fair | 2013 | 16.6 m | 1,642 |
| SWAMP CREEK | Montana | Good | 2018 | 17.8 m | 1,642 |
| SWAMP CREEK | Montana | Good | 2013 | 16.6 m | 1,642 |
| LIBBY CREEK | Montana | Fair | 1988 | 37.2 m | 1,642 |
| SWAMP CREEK | Montana | Fair | 2013 | 10.7 m | 1,642 |
| IRRIGATION CANAL | Montana | Poor | 1970 | 7.0 m | 1,635 |
| BEAVER CREEK | Montana | Fair | 1962 | 87.1 m | 1,630 |
| ALLEN CREEK 016 | Montana | Fair | 1928 | 7.3 m | 1,617 |
| HENSLEY CREEK 014 | Montana | Fair | 1928 | 25.6 m | 1,617 |
| VALLEY CREEK 019 | Montana | Fair | 1928 | 32.9 m | 1,617 |
| BIG DITCH 017 | Montana | Good | 1955 | 30.8 m | 1,617 |
| COVE DITCH 015 | Montana | Fair | 1928 | 7.9 m | 1,617 |
| BROWN CREEK 013 | Montana | Fair | 1935 | 29.3 m | 1,617 |
| DRAINAGE | Montana | Fair | 1998 | 19.5 m | 1,600 |
| SAND COULEE CREEK | Montana | Fair | 1937 | 17.7 m | 1,597 |
| THREEMILE CREEK | Montana | Good | 1961 | 8.2 m | 1,594 |
| NEVADA CREEK | Montana | Poor | 1936 | 17.6 m | 1,594 |
| HALFWAY CREEK | Montana | Fair | 1936 | 11.6 m | 1,594 |
| INT BERNICE-BOULDER R RD | Montana | Fair | 1985 | 44.8 m | 1,591 |
| INT BERNICE-BOULDER R RD | Montana | Fair | 1985 | 44.8 m | 1,591 |
| BOULDER RIVER | Montana | Good | 1985 | 29.9 m | 1,591 |
| BOULDER RIVER | Montana | Good | 1985 | 29.9 m | 1,591 |
| HELENA VALLEY CANAL | Montana | Good | 2010 | 17.5 m | 1,589 |
| SEVEN MILE CREEK 034 | Montana | Good | 2001 | 12.2 m | 1,589 |
| PORCUPINE CREEK | Montana | Fair | 2006 | 58.7 m | 1,584 |
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.