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.

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BridgeLocationConditionYear BuiltLengthADT
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.