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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
BEAVERHEAD RIVER Montana Fair 1982 43.4 m 2,863
INT JACKSON-HWY 278 Montana Good 1982 39.0 m 2,863
BEAVERHEAD RIVER Montana Fair 1982 43.6 m 2,863
INT JACKSON-HWY 278 Montana Fair 1982 39.0 m 2,863
SEP LOCAL ROAD Montana Fair 1983 19.2 m 2,863
POINDEXTER SLOUGH Montana Fair 1983 22.3 m 2,863
SEP LOCAL ROAD Montana Fair 1983 19.2 m 2,863
BBWA CANAL 037 Montana Fair 1977 12.2 m 2,850
BOYD CREEK Montana Fair 1942 17.4 m 2,831
COTTONWOOD CREEK Montana Good 1954 7.3 m 2,822
MONTURE CREEK Montana Fair 1986 37.2 m 2,822
CRANE CREEK Montana Poor 1957 11.3 m 2,821
FOX CREEK Montana Fair 1974 55.8 m 2,821
USBR MAIN CANAL Montana Fair 1984 27.9 m 2,821
BITTERROOT RIVER OVERFLO Montana Good 1974 40.8 m 2,814
BITTERROOT RIVER OVERFLO Montana Fair 1974 14.6 m 2,814
BITTERROOT RIVER OVERFLO Montana Good 1974 14.6 m 2,814
BITTERROOT RIVER Montana Fair 1974 124.5 m 2,814
MUDDY CREEK Montana Good 1974 28.7 m 2,811
ROSEBUD CREEK Montana Good 1992 23.5 m 2,811
BBWA Canal Montana Good 2024 9.1 m 2,802
CANYON CREEK 073 Montana Good 1967 15.5 m 2,802
BIG DITCH 071 Montana Fair 1964 7.3 m 2,799
MUSSELSHELL RIVER Montana Good 1996 83.8 m 2,799
RATTLESNAKE CR-INT RAMP Montana Fair 1966 68.5 m 2,799
BBWA CANAL 083 Montana Good 1982 18.9 m 2,785
CUSTER COULEE 171 Montana Fair 1928 8.2 m 2,775
WHITEFISH RIVER 154 Montana Fair 1985 39.6 m 2,775
RR 120 Montana Fair 1988 24.7 m 2,771
TONGUE RIVER Montana Fair 2007 99.1 m 2,771
MORRELL CREEK Montana Good 1950 23.2 m 2,758
STOCKPASS Montana Good 1961 7.1 m 2,753
INT EAST FORSYTH Montana Fair 1977 58.5 m 2,749
INT EAST FORSYTH Montana Fair 1977 61.0 m 2,749
BITTERROOT RIVER Montana Fair 1968 92.8 m 2,746
IRRIGATION CANAL Montana Good 1995 11.3 m 2,737
RED ROCK WEST OVERFLOW Montana Good 2020 16.7 m 2,732
RED ROCK COULEE Montana Good 2020 29.4 m 2,732
RED ROCK EAST OVERFLOW Montana Good 2020 19.1 m 2,732
INT P 98-W GLENDIVE Montana Fair 1969 57.3 m 2,693
LITTLE BIGHORN RIVER Montana Fair 1976 49.2 m 2,693
LITTLE BIGHORN RIVER Montana Fair 1956 47.5 m 2,693
INT CIRCLE-RR-7M CR Montana Fair 1969 240.4 m 2,693
INT P 98-W GLENDIVE Montana Fair 1969 57.3 m 2,693
RR Montana Good 2000 69.6 m 2,686
BEAVERHEAD RIVER 033 Montana Poor 1946 45.6 m 2,676
BIG SPRING CREEK Montana Fair 1976 12.2 m 2,663
DRY CREEK Montana Fair 1959 36.6 m 2,656
DRY CREEK Montana Fair 1959 36.6 m 2,656
MILK RIVER Montana Fair 2004 85.8 m 2,655

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.