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.

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BridgeLocationConditionYear BuiltLengthADT
TWO LEGGIN CANAL Montana Good 1991 21.9 m 899
TWO LEGGIN CANAL Montana Good 1989 17.7 m 899
BIGHORN RIVER Montana Fair 1958 175.5 m 899
ROCK CREEK 046 Montana Fair 1987 42.5 m 896
MEDICINE LAKE Montana Fair 1975 49.1 m 891
TRAPPER CREEK Montana Fair 1957 17.1 m 888
CANYON CREEK DITCH 085 Montana Fair 1981 7.3 m 887
CANYON CREEK DITCH 108 Montana Fair 1938 8.5 m 887
CANYON CREEK 106 Montana Good 1970 46.6 m 887
BBWA CANAL 107 Montana Good 2003 20.9 m 887
RR 045 Montana Good 2017 31.1 m 881
BIG DITCH 044 Montana Fair 1950 14.9 m 881
CANYON CREEK 048 Montana Good 1967 21.3 m 881
TONGUE RIVER Montana Fair 1970 61.5 m 877
PABLO FEEDER CANAL 085 Montana Good 2009 24.4 m 873
CANYON CREEK Montana Good 1968 46.9 m 872
SILVER BOW CREEK 007 Montana Fair 1987 15.5 m 869
DRY FORK MILK RIVER Montana Fair 1977 28.3 m 866
USBR MAIN CANAL 082 Montana Fair 1999 24.2 m 865
GRAVEYARD COULEE 094 Montana Fair 1965 9.7 m 856
N FORK FIRST HAY CREEK Montana Fair 1937 23.2 m 856
LOW LINE DITCH Montana Good 1989 12.8 m 852
WARM SPRINGS CREEK Montana Fair 2011 28.0 m 851
RR Montana Fair 1953 39.6 m 849
SOBERUP CREEK Montana Good 2003 34.8 m 836
BELT CREEK Montana Good 1968 48.8 m 833
INT COLSTRIP I 94 Montana Fair 1967 75.7 m 833
RR Montana Fair 1983 65.6 m 833
ARMELLS CREEK Montana Fair 1983 65.4 m 833
BELT CREEK Montana Poor 1968 50.6 m 833
COVE DITCH 012 Montana Fair 1928 8.2 m 828
BIG DITCH 010 Montana Fair 1928 10.7 m 828
COVE DITCH 011 Montana Fair 1928 9.4 m 828
EAST GALLATIN RIVER Montana Fair 1967 40.5 m 825
TIMBER CREEK Montana Fair 1998 24.1 m 825
MILL CREEK 040 Montana Fair 1950 8.2 m 824
SOUTH FORK MILK RIVER Montana Good 1987 21.6 m 821
MISSOURI RIVER OVERFLOW Montana Poor 1950 85.3 m 818
MUSSELSHELL RIVER Montana Good 1969 52.2 m 805
ABANDONED RR Montana Good 1969 70.1 m 805
BLUE CREEK Montana Good 1982 9.1 m 801
TONGUE RIVER Montana Fair 1970 61.1 m 800
LOLO CREEK Montana Fair 1951 8.5 m 799
LOLO CREEK Montana Poor 1957 27.1 m 799
LOLO CREEK Montana Fair 1957 19.5 m 799
MANTERNACH COULEE Montana Good 1988 6.7 m 795
HELENA VALLEY CANAL 116 Montana Good 1958 8.8 m 795
LOLO CREEK Montana Good 1951 8.5 m 793
S FORK BUFFALO CREEK Montana Fair 1988 18.7 m 792
DUCK CREEK Montana Fair 1992 29.7 m 792

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.