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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
POWDER RIVER Montana Fair 1971 164.0 m 2,137
BOULDER RIVER OVERFLOW Montana Poor 1937 7.8 m 2,133
INT EAST BIG TIMBER I 90 Montana Fair 1981 98.4 m 2,133
BOULDER RIVER Montana Fair 1938 87.1 m 2,133
EAST GALLATIN RIVER Montana Fair 1957 15.2 m 2,133
E GALLATIN RIVER OVERFLO Montana Fair 1957 15.2 m 2,133
REESE CREEK Montana Fair 1957 11.6 m 2,133
TWO MEDICINE IRR CANAL Montana Fair 1942 15.2 m 2,130
SHEEP CREEK Montana Fair 1970 40.5 m 2,129
FLATIRON CREEK Montana Fair 1957 11.9 m 2,128
WILLOW CREEK Montana Fair 1957 11.9 m 2,128
TONGUE RIVER Montana Fair 1949 62.1 m 2,126
INT KIDD Montana Fair 1971 23.8 m 2,116
INT KIDD Montana Fair 1971 23.8 m 2,116
INT RED ROCK-RED ROCK RD Montana Fair 1971 37.5 m 2,116
INT RED ROCK-RED ROCK RD Montana Fair 1971 37.5 m 2,116
RED ROCK RIVER Montana Fair 1962 43.6 m 2,116
RED ROCK RIVER Montana Fair 1981 52.9 m 2,116
SEP ROE LN Montana Fair 1962 32.6 m 2,116
SEP ROE LN Montana Fair 1980 34.4 m 2,116
SEP ROAD 240 Montana Fair 1976 23.8 m 2,111
SEP ROAD 240 Montana Fair 1976 23.8 m 2,111
GRIFFITH CREEK Montana Fair 1951 32.3 m 2,109
GLENDIVE CREEK Montana Fair 1969 69.5 m 2,109
GRIFFITH CREEK Montana Fair 1980 34.3 m 2,109
YELLOWSTONE RIVER Montana Fair 1968 613.8 m 2,109
GLENDIVE CREEK Montana Fair 1969 69.5 m 2,109
SEP COUNTY RD 300 Montana Fair 1980 34.4 m 2,109
SEP COUNTY RD 300 Montana Fair 1980 34.4 m 2,109
CANAL - WALKING PATH Montana Fair 2009 29.9 m 2,107
KOOTENAI RIVER-RR Montana Poor 1942 287.1 m 2,104
SARPY CREEK Montana Good 1976 53.6 m 2,094
INT RESERVATION CR-RD Montana Fair 1967 55.4 m 2,094
INT RESERVATION CR-RD Montana Fair 1973 55.5 m 2,094
SEP WRIGHT LN Montana Fair 1970 23.8 m 2,094
YAAK RIVER Montana Fair 1934 65.6 m 2,093
POWDER RIVER Montana Good 1985 190.5 m 2,084
WARM SPRINGS CREEK Montana Fair 1930 12.8 m 2,082
INT GARRYOWEN Montana Fair 1976 30.8 m 2,082
INT GARRYOWEN Montana Fair 1976 30.8 m 2,082
LITTLE BIGHORN RIVER Montana Fair 1956 48.2 m 2,082
LITTLE BIGHORN RIVER Montana Good 1980 50.2 m 2,082
SEP RENO CREEK ROAD Montana Fair 1980 31.4 m 2,082
SEP RENO CREEK ROAD Montana Fair 1980 31.4 m 2,082
SEP COUNTY ROAD Montana Fair 1980 23.9 m 2,082
SEP COUNTY ROAD Montana Fair 1980 24.3 m 2,082
SEP COUNTY ROAD Montana Fair 1980 24.1 m 2,082
SEP COUNTY ROAD Montana Fair 1980 24.1 m 2,082
MRL SPUR (NOT IN USE) Montana Fair 1929 27.0 m 2,075
CLARK FORK RIVER Montana Fair 1958 323.4 m 2,069

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.