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 |
|---|---|---|---|---|---|
| MUDDY CREEK 010 | Montana | Good | 2007 | 12.3 m | 100 |
| GREENFIELD CANAL 058 | Montana | Good | 1978 | 19.2 m | 100 |
| BIG COULEE 059 | Montana | Fair | 1976 | 9.8 m | 100 |
| GREENFIELD SO CANAL 039 | Montana | Poor | 1966 | 11.9 m | 100 |
| TWELVE MILE CREEK 093 | Montana | Good | 1989 | 18.9 m | 100 |
| SUN RIVER SLOPE CANAL071 | Montana | Good | 2016 | 29.4 m | 100 |
| DEEP CREEK 065 | Montana | Good | 1976 | 25.6 m | 100 |
| TETON CANAL 030 | Montana | Fair | 1984 | 7.9 m | 100 |
| TETON RIVER 049 | Montana | Good | 1998 | 43.0 m | 100 |
| SEP I 15 001 | Montana | Good | 1977 | 90.8 m | 100 |
| GREENFIELD CANAL 042 | Montana | Fair | 1969 | 11.8 m | 100 |
| GREENFIELD CANAL 055 | Montana | Fair | 1994 | 18.8 m | 100 |
| DRAINAGE 057 | Montana | Fair | 1988 | 7.3 m | 100 |
| DRAINAGE 129 | Montana | Poor | 1974 | 6.9 m | 100 |
| TETON RIVER 067 | Montana | Good | 1976 | 43.9 m | 100 |
| SPRING VALLEY CANAL 047 | Montana | Fair | 1975 | 21.6 m | 100 |
| MUDDY CREEK 016 | Montana | Fair | 1980 | 45.7 m | 100 |
| GREENFIELD CANAL 043 | Montana | Fair | 1988 | 17.6 m | 100 |
| SPRING VALLEY CANAL 046 | Montana | Fair | 1986 | 19.2 m | 100 |
| TETON RIVER 068 | Montana | Fair | 1976 | 23.5 m | 100 |
| TETON RIVER 060 | Montana | Fair | 1938 | 29.3 m | 100 |
| TETON RIVER 064 | Montana | Fair | 1973 | 43.6 m | 100 |
| SEVEN MILE COULEE 130 | Montana | Good | 1962 | 7.1 m | 100 |
| GREENFIELD CANAL 044 | Montana | Fair | 1982 | 18.7 m | 100 |
| TETON RIVER 099 | Montana | Fair | 1965 | 106.0 m | 100 |
| IRRIGATION CANAL 031 | Montana | Fair | 1949 | 17.4 m | 100 |
| CITY COUNTY DRAIN 049 | Montana | Fair | 1995 | 7.3 m | 100 |
| WILLOW CREEK 009 | Montana | Fair | 1987 | 9.4 m | 100 |
| INT BRONKEN RD I 15 003 | Montana | Good | 1964 | 75.0 m | 100 |
| INT POTTER RD I 15 004 | Montana | Fair | 1980 | 71.0 m | 100 |
| SEP I 15 008 | Montana | Fair | 1971 | 68.5 m | 100 |
| SEP I 15 012 | Montana | Good | 1971 | 68.5 m | 100 |
| SEP GUS BLASE ROAD 011 | Montana | Good | 1980 | 70.7 m | 100 |
| INT MARIAS VALLEY RD 007 | Montana | Fair | 1976 | 87.4 m | 100 |
| MUGGINS CREEK 004 | Montana | Fair | 1970 | 7.3 m | 100 |
| SEP I 94 016 | Montana | Fair | 1976 | 85.9 m | 100 |
| INT BIGHORN I 94 002 | Montana | Fair | 1963 | 78.3 m | 100 |
| LITTLE PORCUPINE CR 015 | Montana | Fair | 1980 | 19.2 m | 100 |
| SNAKE CREEK 042 | Montana | Fair | 1950 | 12.2 m | 100 |
| MIDDLE FORK CASH CR 049 | Montana | Fair | 1960 | 8.5 m | 100 |
| WILLOW CREEK 030 | Montana | Fair | 2000 | 28.4 m | 100 |
| CHERRY CREEK 004 | Montana | Good | 2012 | 19.6 m | 100 |
| CHERRY CREEK 093 | Montana | Fair | 2012 | 24.4 m | 100 |
| ROCK CREEK CANAL 029 | Montana | Fair | 2004 | 7.6 m | 100 |
| ROCK CREEK 098 | Montana | Fair | 1955 | 40.2 m | 100 |
| MILK RIVER 036 | Montana | Fair | 1995 | 62.5 m | 100 |
| LITTLE SNAKE CREEK 048 | Montana | Poor | 1965 | 7.9 m | 100 |
| MIDDLE FK PORCUPINE 020 | Montana | Good | 1981 | 28.3 m | 100 |
| SNOW COULEE 021 | Montana | Fair | 1981 | 25.3 m | 100 |
| MID FK PORCUPINE CR 013 | Montana | Fair | 1960 | 28.3 m | 100 |
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.