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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
SEP SAGER LANE Montana Good 1975 24.1 m 5,354
CLARK FORK RIVER Montana Fair 1961 46.6 m 5,354
SEP SAGER LANE Montana Good 1975 24.1 m 5,354
FAU 5225-14TH ST SW Montana Good 1997 41.5 m 5,330
BIG CHERRY CREEK Montana Poor 1976 46.0 m 5,295
SEP 5TH AVE SW Montana Good 1967 38.1 m 5,254
SUN RIVER Montana Fair 1966 147.8 m 5,254
SUN RIVER Montana Fair 1966 147.8 m 5,254
SEP 5TH AVE SW Montana Good 1967 38.1 m 5,254
SIX MILE CREEK Montana Good 2020 7.5 m 5,250
RR Montana Good 2020 108.7 m 5,250
MISSOURI RIVER Montana Good 2020 201.5 m 5,250
INT E GARRISON-RR Montana Fair 1979 182.2 m 5,232
INT E GARRISON-RR Montana Fair 1979 177.3 m 5,232
INT W GARRISON-RR Montana Poor 1979 216.3 m 5,232
INT W GARRISISON-RR Montana Fair 1979 216.3 m 5,232
LITTLE BLACKFOOT RIVER Montana Fair 1979 40.4 m 5,232
LITTLE BLACKFOOT RIVER Montana Good 1979 39.9 m 5,232
INT MANCHESTER Montana Good 1960 33.5 m 5,227
DRAINAGE Montana Fair 1968 6.2 m 5,221
CLARK FORK RIVER Montana Good 1978 26.2 m 5,209
CLARK FORK RIVER Montana Good 1978 26.2 m 5,209
INT WARM SPRINGS Montana Good 1978 68.8 m 5,209
INT WARM SPRINGS Montana Good 1978 68.8 m 5,209
BIG SPRING CREEK Montana Fair 1960 10.4 m 5,189
N FK W GALLATIN RIV 005 Montana Good 1982 6.1 m 5,180
P 69 Montana Fair 1968 60.9 m 5,175
INT WHITEHALL Montana Fair 1966 39.3 m 5,175
INT DESMET I 90 Montana Fair 1966 105.5 m 5,175
P 69 Montana Fair 1968 65.8 m 5,175
INT DESMET I 90 Montana Fair 1995 106.0 m 5,175
INT WHITEHALL Montana Fair 1966 39.3 m 5,175
DAYTON CREEK Montana Fair 1987 21.6 m 5,161
YELLOWSTONE RIVER Montana Fair 2013 195.6 m 5,141
INT PHOSPHATE Montana Fair 1973 43.6 m 5,136
SEP GARRISON FRONTAGE RD Montana Fair 1973 23.8 m 5,136
SEP GARRISON FRONTAGE RD Montana Fair 1973 23.8 m 5,136
INT PHOSPHATE Montana Fair 1973 39.0 m 5,136
WOLF CREEK Montana Fair 1966 10.3 m 5,109
BITTERROOT RIVER Montana Fair 1954 99.8 m 5,076
COTTONWOOD CREEK Montana Good 2014 16.1 m 5,074
RR BY WATERWORKS Montana Good 2009 45.9 m 5,063
SEP RR Montana Good 1973 7.3 m 5,042
TEN MILE CREEK Montana Good 1988 33.1 m 5,018
YELLOWSTONE RIVER Montana Poor 1957 175.5 m 5,017
HYALITE CREEK Montana Good 2022 12.2 m 4,997
INT WEST BIG TIMBER Montana Good 1981 44.2 m 4,977
INT WEST BIG TIMBER Montana Fair 1981 44.2 m 4,977
BOULDER RIVER Montana Good 1980 120.7 m 4,977
BOULDER RIVER Montana Fair 1980 120.7 m 4,977

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.