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.

Clear
BridgeLocationConditionYear BuiltLengthADT
LITTLE BELT CREEK 099 Montana Fair 1950 7.2 m 158
LITTLE BELT CREEK 003 Montana Fair 1938 9.8 m 158
BUTTE CREEK Montana Fair 1950 23.5 m 158
BOULDER RIVER 003 Montana Good 2017 38.4 m 157
BOULDER RIVER 002 Montana Fair 1931 34.1 m 157
BOULDER RIVER Montana Poor 1950 9.2 m 157
BOULDER RIVER Montana Fair 1940 10.7 m 157
BIG HOLE RIVER 036 Montana Fair 1978 73.8 m 157
BOULDER RIVER 040 Montana Fair 1938 26.2 m 157
FOUR MILE CREEK 039 Montana Fair 1938 9.4 m 157
BOULDER RIVER 041 Montana Poor 1933 30.2 m 157
MUSSELSHELL RIVER Montana Good 1960 58.8 m 157
SPECULATOR CREEK 011 Montana Fair 1965 8.2 m 157
MILLER CREEK 001 Montana Fair 1965 8.2 m 157
BYNUM RESEVOIR CANAL 002 Montana Good 1982 20.4 m 155
BELT CREEK 084 Montana Fair 1938 47.2 m 155
PARROT DITCH Montana Good 2023 6.8 m 154
SPRING COULEE Montana Fair 1950 13.7 m 154
BIG MUDDY CREEK Montana Fair 1956 33.5 m 153
WOODY ISLAND CREEK Montana Good 1981 38.1 m 153
TIMBER CREEK Montana Fair 1960 62.7 m 153
NELSON CREEK Montana Fair 1963 40.9 m 153
DRAINAGE Montana Fair 1955 11.9 m 152
BIG MUDDY CREEK OVERFLOW Montana Fair 1949 34.7 m 151
BIG MUDDY CREEK Montana Fair 1949 46.0 m 151
ROCK CREEK 013 Montana Fair 1931 10.7 m 150
TWELVEMILE CREEK 014 Montana Fair 1931 10.7 m 150
DEEP COULEE Montana Fair 1938 6.5 m 150
MEDICINE TAIL COULEE Montana Poor 1938 14.0 m 150
ROCKY CREEK 044 Montana Fair 1976 8.8 m 149
FLY CREEK 002 Montana Good 2016 42.1 m 147
MILL CREEK 018 Montana Fair 1940 17.5 m 147
SAND COULEE 003 Montana Fair 1940 17.7 m 147
BULL MOUNTAIN CREEK 019 Montana Fair 1940 17.6 m 147
ROUGH COULEE 033 Montana Fair 1940 17.8 m 147
SPRING CREEK 035 Montana Fair 1940 17.6 m 147
DRAINAGE Montana Fair 1948 7.9 m 145
GREASEWOOD CREEK 033 Montana Fair 1979 15.7 m 142
BIG PORCUPINE CR 034 Montana Fair 1977 26.5 m 142
WARM SPRINGS CREEK 006 Montana Good 2015 15.8 m 142
NINEMILE SLIDE 026 Montana Poor 1947 114.3 m 141
NINEMILE CREEK 035 Montana Poor 1924 37.8 m 141
CLEAR CREEK 095 Montana Fair 1985 12.2 m 141
STILLWATER RIVER 082 Montana Fair 1988 44.6 m 141
LITTLE BOX ELDER CR 033 Montana Fair 1974 9.4 m 141
CLARK FK-RR 060 Montana Fair 1942 239.8 m 140
ST REGIS RIVER 059 Montana Poor 1937 59.3 m 140
LITTLE POWDER RIVER Montana Fair 1974 55.8 m 139
SAND CREEK 042 Montana Fair 2012 23.7 m 139
PROSPECT CREEK Montana Fair 1979 29.0 m 138

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.