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
SWEET GRASS CREEK 01 Montana Fair 1957 33.5 m 100
SWEET GRASS CREEK 044 Montana Poor 1970 14.6 m 100
SEP I 90 008 Montana Fair 1981 87.1 m 100
BRIDGER CREEK 054 Montana Fair 2004 9.6 m 100
WORK CREEK 050 Montana Fair 1993 8.8 m 100
UPPER DEER CREEK 028 Montana Poor 1975 13.4 m 100
BOULDER RIVER 030 Montana Good 2002 36.1 m 100
E BOULDER RIVER 031 Montana Fair 1965 12.5 m 100
E BOULDER RIVER 033 Montana Good 1969 9.1 m 100
E BOULDER RIVER 034 Montana Fair 1971 10.4 m 100
INT DEHART I 90 007 Montana Good 1981 90.2 m 100
BRIDGER CREEK 053 Montana Fair 1975 12.8 m 100
BOZEMAN CREEK 115 Montana Fair 1982 7.8 m 100
BOULDER RIVER 045 Montana Fair 1960 36.0 m 100
WEST BOULDER RIVER 025 Montana Poor 1912 18.9 m 100
TETON RIVER 051 Montana Fair 1930 30.8 m 100
TETON RIVER 061 Montana Fair 1970 30.5 m 100
DOG CREEK 062 Montana Good 2013 23.8 m 100
NORTH FORK WILLOW CR 066 Montana Fair 1986 12.2 m 100
DOG CREEK 069 Montana Good 2013 23.8 m 100
WILLOW CREEK 070 Montana Fair 1970 18.9 m 100
DEEP CREEK 076 Montana Good 1986 15.2 m 100
MUDDY CREEK 018 Montana Poor 1938 26.8 m 100
FOSTER CREEK 026 Montana Good 1984 15.5 m 100
MUDDY CREEK 025 Montana Good 2009 39.5 m 100
NO NAME DITCH 011 Montana Good 1938 8.5 m 100
NO NAME DITCH 012 Montana Good 1995 6.1 m 100
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
SPRING CREEK 023 Montana Fair 1969 10.4 m 100
CLARKS FK YELLOWSTONE026 Montana Fair 1969 73.1 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

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.