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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
JEFFERSON RIVER Montana Fair 2001 105.9 m 1,227
FORTINE CREEK 133 Montana Fair 1989 21.5 m 1,226
SOUTH WILLOW CREEK Montana Good 1976 27.4 m 1,223
HELENA VALLEY CANAL 082 Montana Good 2021 14.8 m 1,219
HASKILL CREEK 071 Montana Fair 1994 15.2 m 1,211
UNGER COULEE Montana Good 2023 34.1 m 1,209
Buggy Creek Montana Good 2024 40.8 m 1,209
BEAR CREEK Montana Fair 1996 44.8 m 1,209
LIME CREEK Montana Fair 1996 37.2 m 1,209
MILK RIVER Montana Fair 1966 108.4 m 1,209
SURPRISE DITCH 056 Montana Good 2013 9.1 m 1,206
MAIN CANAL Montana Good 1972 12.6 m 1,200
LITTLE PORCUPINE CREEK Montana Fair 1976 23.6 m 1,200
MAIN CANAL Montana Fair 1976 12.8 m 1,200
RR Montana Fair 1954 94.9 m 1,191
INT W MILES CITY-I 94 Montana Fair 1961 82.6 m 1,191
ALKALI CREEK 208 Montana Good 2014 25.2 m 1,178
WATER GULCH Montana Fair 1942 17.4 m 1,173
MISSOURI RIVER Montana Fair 1998 190.7 m 1,163
DRAINAGE Montana Fair 1931 7.0 m 1,162
RR Montana Fair 2007 95.5 m 1,162
YELLOWSTONE RIVER Montana Fair 1921 86.8 m 1,160
DRAINAGE Montana Fair 1939 7.9 m 1,148
DRAINAGE Montana Fair 1939 17.3 m 1,148
S FORK CUT BANK CREEK Montana Good 2018 25.2 m 1,148
LAKE CREEK Montana Good 2018 23.7 m 1,148
DRAINAGE Montana Fair 1930 11.6 m 1,148
CLOVER CREEK Montana Fair 1967 27.9 m 1,144
FLINT CREEK Montana Fair 1931 35.1 m 1,144
BOULDER CREEK Montana Fair 1986 25.6 m 1,144
WEST FORK ROCK CREEK Montana Good 1980 30.2 m 1,142
FLATHEAD CREEK Montana Fair 1973 73.1 m 1,140
CLOVER CREEK-RR Montana Fair 1957 81.7 m 1,136
GRAYLING CREEK Montana Fair 1964 23.2 m 1,132
N FORK 1ST HAY CREEK Montana Fair 2003 8.7 m 1,131
WILLOW CREEK Montana Fair 2000 9.4 m 1,120
WILLOW CREEK Montana Fair 2000 9.4 m 1,120
ANTELOPE CREEK Montana Good 1986 6.1 m 1,120
INT CLINTON-I 90 Montana Fair 1972 84.1 m 1,118
INT VALIER I 15 Montana Fair 1972 87.1 m 1,118
INT TERRY-I 94 Montana Fair 1971 99.1 m 1,114
CLARKS FK YELLOWSTNE 053 Montana Good 2008 61.5 m 1,105
RYE CREEK Montana Fair 1990 18.6 m 1,099
E FORK BITTERROOT RIVER Montana Good 2003 62.5 m 1,099
E FORK BITTERROOT RIVER Montana Fair 1937 39.6 m 1,099
E FORK BITTERROOT RIVER Montana Good 2003 64.6 m 1,099
BITTERROOT RIVER Montana Fair 1986 74.5 m 1,099
E FORK BITTERROOT RIVER Montana Good 2003 55.3 m 1,099
IRRIGATION CANAL Montana Good 2003 9.1 m 1,097
SCOTTS COULEE Montana Good 1976 30.8 m 1,092

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.