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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
OTTER CREEK Montana Fair 1964 11.3 m 2,361
OTTER CREEK Montana Good 1964 25.3 m 2,361
ST MARYS RIVER Montana Fair 1956 95.4 m 2,355
TONGUE RIVER Montana Fair 1974 89.6 m 2,354
SEP CEMETERY RD Montana Fair 1961 46.6 m 2,354
INT MELROSE-HWY 91 Montana Fair 1973 39.0 m 2,354
INT MOOSE CREEK Montana Fair 1976 23.2 m 2,354
INT MELROSE-HWY 91 Montana Fair 1973 39.0 m 2,354
INT MOOSE CREEK Montana Fair 1976 23.2 m 2,354
INT P-23 BROADUS Montana Good 2019 47.1 m 2,349
INT P-23 BROADUS Montana Good 2020 47.1 m 2,349
SEP CEMETERY RD Montana Fair 1974 46.6 m 2,349
HOGAN`S SLOUGH Montana Fair 1958 25.6 m 2,349
CLEAR CREEK Montana Good 2020 29.2 m 2,346
CLARK FORK 003 Montana Fair 1972 133.2 m 2,346
LODGE CREEK Montana Poor 1942 28.7 m 2,335
IRRIGATION-STOCKPASS Montana Poor 1940 46.6 m 2,335
DRAINAGE Montana Fair 1940 17.7 m 2,335
THIRTEEN MILE CREEK Montana Fair 1969 101.5 m 2,333
MORGAN CREEK Montana Fair 1967 37.4 m 2,333
LOWER 7 MILE CREEK Montana Fair 1967 40.4 m 2,333
CLARK FORK RIVER Montana Poor 1949 41.1 m 2,330
DAWKINS BRANCH Montana Good 2021 6.1 m 2,328
COTTONWOOD CREEK Montana Fair 1953 17.7 m 2,325
TAYLOR FORK GALLATIN R Montana Good 1959 32.0 m 2,325
WEST GALLATIN RIVER Montana Fair 1959 37.2 m 2,325
RR Montana Good 1964 46.0 m 2,320
ROCK CREEK Montana Good 2021 19.5 m 2,319
DRAINAGE Montana Good 2021 6.1 m 2,319
LITTLE ROCK CR-STOCKPASS Montana Good 2009 6.6 m 2,319
RR Montana Good 2009 70.2 m 2,316
OTTER CREEK Montana Good 1959 36.3 m 2,314
BLACKFOOT RIVER Montana Fair 1940 135.9 m 2,314
OTTER CREEK Montana Good 1959 36.3 m 2,314
OTTER CREEK Montana Good 1959 37.8 m 2,314
OTTER CREEK Montana Poor 1959 31.2 m 2,314
OTTER CREEK Montana Good 1959 28.3 m 2,314
OTTER CREEK Montana Poor 1959 31.4 m 2,314
OTTER CREEK Montana Poor 1959 31.4 m 2,314
OTTER CREEK Montana Fair 1959 28.2 m 2,314
OTTER CREEK Montana Good 1959 31.2 m 2,314
GARDEN COULEE-STOCKPASS Montana Fair 1975 7.0 m 2,313
USBR MAIN CANAL Montana Fair 1974 29.4 m 2,313
USBR MAIN CANAL Montana Fair 1974 23.4 m 2,313
DUNLAP CREEK Montana Fair 1974 37.7 m 2,313
E FORK OTTER CREEK Montana Good 1992 13.4 m 2,305
DIVIDE CREEK Montana Fair 1934 15.9 m 2,300
ST. MARY RIVER Montana Fair 1934 42.7 m 2,300
WEBER IRRIGATION CANAL Montana Poor 1950 8.2 m 2,300
WOLF CREEK Montana Good 1993 18.3 m 2,300

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.