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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
HELENA VALLEY CANAL 086 Montana Good 2000 14.4 m 1,893
BAKER CREEK Montana Fair 1952 29.5 m 1,889
GALLATIN RIVER Montana Fair 1951 55.2 m 1,889
GRAVEL COULEE Montana Fair 1954 29.0 m 1,881
LITTLE BITTERROOT RIVER Montana Fair 2010 29.0 m 1,877
INT LIMA-BAILEY ST Montana Poor 1959 36.3 m 1,863
INT LIMA-BAILEY ST Montana Fair 1980 36.3 m 1,863
SEP GOSMAN LANE Montana Fair 1967 32.9 m 1,863
SEP GOSMAN LANE Montana Fair 1971 32.9 m 1,863
BIG SHEEP CREEK Montana Fair 1971 11.3 m 1,863
BIG SHEEP CREEK Montana Fair 1971 11.3 m 1,863
INT DELL Montana Fair 1971 42.1 m 1,863
INT DELL Montana Fair 1971 42.1 m 1,863
FISH CREEK Montana Poor 1953 11.6 m 1,858
HYALITE CREEK Montana Fair 1988 9.8 m 1,856
CANYON CREEK DITCH Montana Good 1984 11.6 m 1,855
BEAVERHEAD RIVER 095 Montana Fair 2001 43.5 m 1,816
CANYON CREEK DITCH 061 Montana Fair 1984 10.1 m 1,811
INT SOUTH DILLON I 15 Montana Fair 1983 87.0 m 1,804
BLACKTAIL CREEK Montana Fair 1983 29.9 m 1,804
RR Montana Fair 1983 65.8 m 1,804
GREENFIELDS SOUTH CANAL Montana Good 1983 21.6 m 1,798
GREENFIELDS MAIN CANAL Montana Good 1983 29.3 m 1,798
BEAVER CREEK Montana Fair 1974 87.4 m 1,796
INT CARLYLE RD Montana Fair 1974 29.3 m 1,796
INT CARLYLE RD Montana Fair 1974 29.3 m 1,796
INDIAN CREEK Montana Fair 1933 25.9 m 1,782
SEP RR Montana Fair 2016 170.8 m 1,771
INT MONIDA S 509 Montana Poor 1959 36.0 m 1,771
INT MONIDA S 509 Montana Fair 1981 36.0 m 1,771
SEP RR Montana Fair 2015 119.8 m 1,771
SEP RR Montana Fair 1981 77.1 m 1,771
SEP SNOWLINE STOCK LN Montana Fair 1981 18.3 m 1,771
SEP SNOWLINE STOCK LN Montana Fair 1981 18.3 m 1,771
INT SNOWLINE STOCK LN Montana Fair 1981 23.8 m 1,771
INT SNOWLINE STOCK LN Montana Fair 1981 23.8 m 1,771
SEP RR Montana Fair 1980 146.6 m 1,771
SHOTGUN CREEK Montana Fair 2010 73.1 m 1,765
E GALLATIN RIVER 091 Montana Fair 2001 9.8 m 1,761
MILL COULEE CANAL Montana Fair 1940 7.6 m 1,757
GREENFIELDS SOUTH CANAL Montana Good 1960 19.2 m 1,757
WHITEFISH RIVER 035 Montana Good 1988 32.6 m 1,735
FLOWER CREEK 004 Montana Fair 1968 10.1 m 1,733
SILVER TIP CREEK Montana Good 2011 32.7 m 1,732
CLARKS FORK YELLOWSTONE Montana Fair 2011 85.3 m 1,732
BEAR CREEK Montana Good 2013 31.6 m 1,732
CLARKS FORK YELLOWSTONE Montana Fair 2013 90.0 m 1,732
ABANDONED RAILROAD Montana Fair 1974 160.9 m 1,727
RR Montana Good 1972 50.3 m 1,727
DRY FORK MARIAS RIVER Montana Good 1972 75.3 m 1,727

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.