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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
WILDLIFE UPASS-DRAINAGE Montana Good 2006 7.8 m 8,659
WILDLIFE UPASS-DRAINAGE Montana Good 2006 7.8 m 8,659
WILDLIFE UPASS-DRAINAGE Montana Good 2006 8.5 m 8,659
U1025-RR Montana Poor 1960 521.4 m 8,576
U1024-25-RR Montana Poor 1960 522.1 m 8,576
ABANDONED RR Montana Poor 1969 61.9 m 8,575
JEFFERSON RIVER Montana Good 1968 83.5 m 8,575
JEFFERSON RIVER Montana Good 1968 83.2 m 8,575
JEFFERSON RIVER OVERFLOW Montana Fair 1969 77.6 m 8,575
ABANDONED RR Montana Fair 1969 60.4 m 8,575
JEFFERSON RIVER OVERFLOW Montana Fair 1969 77.7 m 8,575
BITTERROOT RIVER OVERFLO Montana Fair 1951 23.2 m 8,573
BITTERROOT RIVER Montana Fair 1951 99.8 m 8,573
FLATHEAD RIVER Montana Fair 1966 468.4 m 8,557
IRRIGATION CANAL Montana Fair 1971 7.7 m 8,516
INT PINEHILL-I 94 Montana Fair 1967 86.2 m 8,469
EAST GALLATIN RIVER Montana Fair 1984 23.8 m 8,443
BRIDGER CREEK Montana Fair 2005 25.8 m 8,443
FLATHEAD RIVER Montana Poor 1955 209.0 m 8,310
INT BONNER I 90 Montana Fair 1965 74.3 m 8,302
BLACKFOOT RIVER Montana Fair 2009 105.9 m 8,302
LAKE ELMO DR Montana Good 1990 43.0 m 8,274
BBWA CANAL Montana Fair 1960 12.8 m 8,274
QUINN CREEK ROAD Montana Good 2022 34.7 m 8,272
INT JACKSON CREEK Montana Fair 1979 39.6 m 8,272
INT TRAIL CREEK Montana Fair 1962 39.3 m 8,272
QUINN CREEK ROAD Montana Good 2022 48.2 m 8,272
INT TRAIL CREEK Montana Fair 1962 39.3 m 8,272
INT JACKSON CREEK Montana Fair 1979 39.6 m 8,272
INT HOPPER Montana Fair 1978 38.4 m 8,236
OREA CREEK ROAD Montana Fair 1977 23.8 m 8,236
INT HOPPER Montana Fair 1978 38.4 m 8,236
OREA CREEK ROAD Montana Fair 1977 23.8 m 8,236
POST CREEK Montana Fair 1933 15.5 m 8,158
NINE PIPE RESERVOIR Montana Poor 1933 23.6 m 8,158
DRAINAGE Montana Good 1986 6.5 m 8,111
WILDLIFE UNDERPASS Montana Good 2006 7.4 m 7,999
WILDLIFE UNDERPASS Montana Good 2006 7.4 m 7,999
BBWA CANAL Montana Fair 1984 16.2 m 7,956
GRANT CREEK 003 Montana Fair 1981 13.4 m 7,844
SEP LOCAL ROAD Montana Fair 1973 92.8 m 7,824
SEP LOCAL ROAD Montana Fair 1973 48.0 m 7,824
INT TAFT Montana Fair 1973 40.5 m 7,824
ST. REGIS RIVER Montana Fair 1973 46.9 m 7,824
SEP RANDOLPH CREEK ROAD Montana Fair 1973 36.0 m 7,824
SABINE CREEK-WILDLIFE Montana Good 2006 7.3 m 7,746
WILDLIFE UPASS-DRAINAGE Montana Good 2006 8.1 m 7,746
MISSION CREEK Montana Fair 2006 40.5 m 7,746
WILDLIFE UPASS-DRAINAGE Montana Good 2006 7.3 m 7,746
GRADE SEPARATION Montana Fair 2006 20.3 m 7,746

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.