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 |
|---|---|---|---|---|---|
| N FK BLACKFOOT RIV | Montana | Fair | 1960 | 43.6 m | 40 |
| CLEARWATER RIVER | Montana | Fair | 1951 | 9.1 m | 40 |
| LODGEPOLE CR | Montana | Good | 1996 | 15.1 m | 40 |
| LODGEPOLE CR | Montana | Fair | 1996 | 13.3 m | 40 |
| PLACID CR | Montana | Good | 1976 | 9.9 m | 40 |
| COTTONWOOD CREEK | Montana | Good | 2007 | 9.6 m | 40 |
| COUGAR CREEK | Montana | Good | 2008 | 9.8 m | 40 |
| TRAIL CREEK | Montana | Good | 2011 | 17.4 m | 40 |
| BIG CREEK | Montana | Fair | 1951 | 18.5 m | 40 |
| TWOMILE CREEK | Montana | Fair | 1959 | 7.4 m | 40 |
| RANDOLF CREEK | Montana | Good | 1991 | 13.3 m | 40 |
| HENDERSON CREEK | Montana | Poor | 1955 | 13.1 m | 40 |
| FLAT CREEK CREEK | Montana | Good | 2004 | 12.5 m | 40 |
| NO ELK CREEK | Montana | Good | 2004 | 9.5 m | 40 |
| HAIR BALL | Montana | Good | 2004 | 9.5 m | 40 |
| LOWER NO ELK CREEK | Montana | Good | 2004 | 9.5 m | 40 |
| W FK FISHTRAP | Montana | Fair | 1965 | 9.9 m | 40 |
| WEST FORK DRY CREEK | Montana | Good | 1992 | 9.9 m | 40 |
| RED ROCK COULEE 002 | Montana | Fair | 1933 | 9.4 m | 40 |
| FORT BELKNAP CANAL 003 | Montana | Good | 2012 | 19.7 m | 40 |
| RED ROCK COULEE 004 | Montana | Fair | 1933 | 12.5 m | 40 |
| SHONKIN CREEK 017 | Montana | Fair | 2011 | 16.3 m | 40 |
| S FK BURNS CREEK 063 | Montana | Fair | 1984 | 9.8 m | 40 |
| SHEEP CREEK 082 | Montana | Good | 2014 | 15.2 m | 40 |
| DRAINAGE | Montana | Fair | 1954 | 8.1 m | 40 |
| USBR MAIN CANAL 094 | Montana | Good | 2005 | 18.3 m | 39 |
| VANDALIA SOUTH CANAL 003 | Montana | Poor | 2002 | 7.4 m | 39 |
| REDWATER RIVER | Montana | Good | 1957 | 98.1 m | 39 |
| LONG GRASS CREEK | Montana | Fair | 1957 | 8.5 m | 39 |
| MISSOURI RIVER | Montana | Fair | 1982 | 275.5 m | 39 |
| MILK RIVER | Montana | Fair | 1999 | 70.3 m | 39 |
| WHITEWATER CREEK | Montana | Poor | 1976 | 24.5 m | 39 |
| STINKY CREEK | Montana | Fair | 2003 | 24.0 m | 39 |
| COTTONWOOD CREEK | Montana | Good | 2023 | 14.6 m | 38 |
| FLATWILLOW CREEK 013 | Montana | Good | 2013 | 23.6 m | 38 |
| SILVER BOW CREEK 010 | Montana | Fair | 2007 | 12.2 m | 38 |
| BEAVER CREEK | Montana | Poor | 1960 | 30.5 m | 38 |
| INT GORDON-I 15 | Montana | Fair | 1972 | 105.5 m | 37 |
| LITTLE PRICKLY PEAR 110 | Montana | Good | 2012 | 17.4 m | 37 |
| LITTLE PRICKLY PEAR 109 | Montana | Fair | 1905 | 30.8 m | 37 |
| FLAT CREEK 134 | Montana | Good | 2006 | 10.9 m | 37 |
| FLAT CREEK 017 | Montana | Good | 2007 | 10.9 m | 37 |
| YELLOWSTONE RIVER 030 | Montana | Fair | 1907 | 328.5 m | 37 |
| EAST REDWATER CREEK 084 | Montana | Fair | 2008 | 30.4 m | 37 |
| N FK LISK CREEK 034 | Montana | Fair | 1985 | 12.2 m | 37 |
| ROSEBUD CREEK 047 | Montana | Fair | 1983 | 12.6 m | 37 |
| ROSEBUD CR OVRFLOW 046 | Montana | Fair | 1980 | 12.2 m | 37 |
| ROSEBUD CREEK 048 | Montana | Fair | 1982 | 18.9 m | 37 |
| DRAINAGE | Montana | Good | 2015 | 22.7 m | 36 |
| BEAVERHEAD RIVER | Montana | Good | 2020 | 42.4 m | 36 |
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.