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 |
|---|---|---|---|---|---|
| CLARK FORK R FLOOD PLAIN | Montana | Fair | 1977 | 101.8 m | 35,914 |
| CLARK FORK RIVER | Montana | Fair | 1975 | 253.5 m | 35,914 |
| W BROADWAY ST-RR | Montana | Fair | 1998 | 149.3 m | 29,572 |
| MT Power RR Spur | Montana | Good | 2023 | 16.5 m | 29,488 |
| BITTERROOT RIVER | Montana | Fair | 1968 | 105.7 m | 28,185 |
| CITY COUNTY DRAIN DITCH | Montana | Fair | 1966 | 7.0 m | 27,985 |
| GRANT CREEK | Montana | Good | 1965 | 9.9 m | 27,328 |
| BBWA CANAL | Montana | Fair | 1994 | 15.8 m | 26,602 |
| INT N 7TH AVE-I 90 | Montana | Fair | 2014 | 61.0 m | 26,020 |
| STILLWATER RIVER | Montana | Fair | 1996 | 58.2 m | 25,919 |
| HYALITE CREEK | Montana | Fair | 1956 | 9.9 m | 25,670 |
| MISSOURI RIVER-PED TRAIL | Montana | Good | 1980 | 293.8 m | 24,549 |
| INT N 19TH AVE | Montana | Fair | 1994 | 104.2 m | 23,992 |
| RR | Montana | Good | 2007 | 49.0 m | 23,980 |
| RR | Montana | Fair | 2007 | 49.2 m | 23,980 |
| CLARK FORK RIVER | Montana | Good | 2020 | 141.3 m | 23,274 |
| INT LOCKWOOD I 90 | Montana | Fair | 1966 | 84.1 m | 23,199 |
| RR | Montana | Fair | 1993 | 81.4 m | 23,199 |
| YELLOWSTONE RIVER | Montana | Fair | 1993 | 172.5 m | 23,199 |
| US 2 | Montana | Good | 2016 | 59.1 m | 22,752 |
| CLARK FORK RIVER | Montana | Fair | 2003 | 151.4 m | 22,608 |
| PEDESTRIAN-BIKE PATH | Montana | Good | 2002 | 6.8 m | 22,608 |
| FLATHEAD RIVER | Montana | Fair | 1977 | 148.9 m | 22,220 |
| RATTLESNAKE CREEK | Montana | Fair | 1964 | 20.4 m | 21,390 |
| WALKING PATH | Montana | Fair | 2011 | 9.7 m | 21,232 |
| LOLO CREEK | Montana | Good | 1965 | 37.5 m | 20,994 |
| GREAT NORTHERN AREA | Montana | Good | 2003 | 6.1 m | 20,397 |
| FOYS LAKE ROAD | Montana | Good | 2021 | 29.8 m | 19,966 |
| ASHLEY CREEK | Montana | Good | 2010 | 33.4 m | 19,966 |
| OLD RESERVE DRIVE | Montana | Good | 2016 | 57.2 m | 19,964 |
| BELL CREEK | Montana | Fair | 1963 | 9.7 m | 19,755 |
| RR | Montana | Good | 1978 | 84.1 m | 19,327 |
| RR | Montana | Good | 2003 | 43.9 m | 18,569 |
| CLARK FORK RIVER | Montana | Fair | 1958 | 168.2 m | 18,393 |
| ASHLEY CREEK | Montana | Fair | 2001 | 31.5 m | 18,053 |
| BBWA CANAL | Montana | Fair | 1978 | 16.2 m | 17,985 |
| INT CUSTER AVE-I 15 | Montana | Good | 2012 | 72.7 m | 16,988 |
| WHITEFISH RIVER | Montana | Good | 1959 | 18.3 m | 16,086 |
| PABLO FEEDER CANAL | Montana | Good | 2006 | 6.6 m | 15,997 |
| BBWA CANAL | Montana | Fair | 1981 | 15.5 m | 15,881 |
| MILL CREEK | Montana | Good | 2011 | 24.8 m | 15,852 |
| SEP BILLINGS BLVD-I 90 | Montana | Fair | 1963 | 65.5 m | 15,780 |
| INT AIRWAY BLVD | Montana | Fair | 2014 | 45.3 m | 15,554 |
| SEP VALLEY CENTER SPUR | Montana | Fair | 1966 | 34.7 m | 15,554 |
| SEP E VALLEY CENTER SPUR | Montana | Fair | 1966 | 34.7 m | 15,554 |
| INT AIRWAY BLVD | Montana | Fair | 2014 | 45.3 m | 15,554 |
| PRICKLY PEAR CREEK | Montana | Good | 1978 | 23.5 m | 15,333 |
| INT VAN BUREN STREET | Montana | Good | 1964 | 50.3 m | 15,284 |
| GREENOUGH DR-RATTLESNAKE | Montana | Fair | 1966 | 74.6 m | 15,284 |
| INT VAN BUREN STREET | Montana | Fair | 1964 | 50.3 m | 15,284 |
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.