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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
YELLOWSTONE RIVER Montana Fair 1930 124.6 m 4,964
SPRING CREEK Montana Fair 1984 25.9 m 4,918
HELENA VALLEY CANAL 073 Montana Good 2004 13.4 m 4,910
SAND CREEK Montana Good 1987 7.9 m 4,907
BBWA CANAL 117 Montana Fair 1938 11.9 m 4,906
TEN MILE CREEK Montana Good 1992 24.1 m 4,837
HELENA VALLEY CANAL Montana Good 2009 16.3 m 4,835
RR Montana Good 1999 82.6 m 4,833
ASHLEY CREEK Montana Fair 1982 31.1 m 4,831
15TH ST NE Montana Fair 1963 33.2 m 4,807
LITTLE PRICKLY PEAR CR Montana Good 1965 7.7 m 4,806
SPRING CREEK Montana Fair 1988 16.2 m 4,764
WARM SPRINGS CREEK Montana Fair 1990 20.3 m 4,752
COAL CREEK Montana Fair 1963 7.3 m 4,724
LIGNITE CREEK Montana Fair 1964 10.8 m 4,724
TONGUE RIVER Montana Fair 1961 89.6 m 4,707
VEHICLE PASS Montana Good 1986 6.2 m 4,697
INT E DRUMMOND Montana Fair 1966 41.1 m 4,666
SEP S-271 Montana Good 1966 39.6 m 4,666
SEP S-271 Montana Fair 1966 39.6 m 4,666
INT E DRUMMOND Montana Good 1966 41.1 m 4,666
S FORK MADISON RIVER Montana Fair 2009 25.0 m 4,666
SEP SHEEP CAMP RD Montana Fair 1966 33.2 m 4,650
INT PIPESTONE Montana Good 1966 38.0 m 4,650
INT PIPESTONE Montana Good 1966 38.0 m 4,650
RR Montana Fair 1966 96.3 m 4,650
RR Montana Fair 1966 96.3 m 4,650
SEP SHEEP CAMP RD Montana Fair 1966 33.2 m 4,650
SILVER BOW CREEK Montana Fair 1964 21.6 m 4,640
RR Montana Good 1964 46.0 m 4,640
INT I 90 Montana Fair 1964 84.1 m 4,640
SILVER BOW CREEK Montana Fair 1964 21.6 m 4,640
ROCK CREEK Montana Good 1990 30.8 m 4,628
LOST HORSE CREEK Montana Good 1990 49.7 m 4,628
BLACKFOOT RIVER Montana Fair 1988 135.9 m 4,627
BLACKFOOT RIVER Montana Fair 1968 137.1 m 4,627
BOX ELDER CREEK Montana Good 1989 22.9 m 4,614
INT CYR-CLARK FORK RVR Montana Fair 1981 238.0 m 4,585
LOCAL-RR Montana Fair 1981 60.9 m 4,585
LOCAL-RR Montana Fair 1964 57.9 m 4,585
INT CYR-CLARK FORK RVR Montana Fair 1965 232.2 m 4,585
CLARK FORK RIVER Montana Fair 1979 310.8 m 4,584
CLARK FORK RIVER Montana Fair 1964 267.9 m 4,584
INT LOTHROP Montana Fair 1963 37.5 m 4,584
INT LOTHROP Montana Fair 1975 43.6 m 4,584
DRY CREEK 025 Montana Good 1994 9.8 m 4,564
ROCK CREEK Montana Fair 1934 41.8 m 4,561
INT MANCHESTER Montana Fair 1960 33.5 m 4,555
HELENA VALLEY CANAL Montana Good 1992 18.9 m 4,510
MADISON RIVER Montana Fair 2001 98.3 m 4,500

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.