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.

Bridge	Location	Condition	Year Built	Length	ADT
WILDLIFE UPASS-DRAINAGE	Montana	Good	2006	8.1 m	7,746
GRADE SEPARATION	Montana	Fair	2006	20.3 m	7,746
BITTERROOT RIVER	Montana	Fair	2014	116.9 m	7,710
INT LOZEAU COUNTY ROAD	Montana	Good	1967	39.0 m	7,649
SEP WOLD ROAD	Montana	Fair	1967	38.1 m	7,580
INT PARK CITY	Montana	Fair	1967	38.1 m	7,580
SEP WOLD ROAD	Montana	Fair	1967	38.1 m	7,580
SEP POPE ROAD	Montana	Fair	1967	38.1 m	7,580
INT PARK CITY	Montana	Fair	1967	38.1 m	7,580
SEP POPE ROAD	Montana	Fair	1967	38.1 m	7,580
INT LAUREL-P 4-RR	Montana	Fair	1964	111.5 m	7,545
SEVEN MILE CREEK 168	Montana	Fair	1947	7.9 m	7,544
SEP LAIRD ST-FRONTAGE RD	Montana	Fair	1967	48.2 m	7,506
INT LINCOLN-I 15	Montana	Poor	1962	62.8 m	7,492
ST. REGIS RIVER	Montana	Fair	1973	60.3 m	7,448
INT HENDERSON	Montana	Fair	1980	42.1 m	7,448
ST. REGIS RVR-LOCAL RD	Montana	Fair	1979	194.4 m	7,448
INT SALTESE	Montana	Fair	1973	22.9 m	7,448
ST. REGIS RVR-LOCAL RD	Montana	Fair	1979	138.7 m	7,448
LOCAL-RARUS RR	Montana	Good	2018	111.6 m	7,379
SILVERBOW CREEK-RR	Montana	Good	2018	182.3 m	7,379
RR-LOCAL	Montana	Fair	2010	78.0 m	7,379
RR-LOCAL	Montana	Fair	2012	74.0 m	7,379
LOCAL RARUS-RR	Montana	Good	2019	111.6 m	7,379
SILVERBOW CREEK-RR	Montana	Good	2019	182.3 m	7,379
E GALLATIN RIVER 090	Montana	Fair	1989	16.2 m	7,375
INT NISSLER	Montana	Fair	1968	89.3 m	7,361
INT NISSLER	Montana	Fair	1968	92.3 m	7,361
SEP LAIRD ST-FRONTAGE RD	Montana	Fair	1967	48.2 m	7,361
MILL CREEK	Montana	Fair	1995	21.9 m	7,194
STILLWATER RIVER	Montana	Fair	1975	46.6 m	7,156
ASHLEY CREEK	Montana	Good	2014	38.5 m	7,127
ASHLEY CREEK	Montana	Fair	2015	38.5 m	7,127
BBWA CANAL 151	Montana	Good	1986	15.2 m	7,121
INT HARRISON AVE	Montana	Fair	1960	63.7 m	7,009
INT HARRISON AVE	Montana	Fair	1960	63.7 m	7,009
BITTERROOT RIVER	Montana	Fair	1949	92.0 m	6,979
BEAVER CREEK	Montana	Fair	1992	6.1 m	6,930
BBWA CANAL	Montana	Fair	1947	11.6 m	6,888
MISSOURI RIVER	Montana	Fair	1935	152.4 m	6,843
RR	Montana	Fair	1979	312.2 m	6,636
INT BEARMOUTH	Montana	Good	1970	36.6 m	6,541
INT BEARMOUTH	Montana	Fair	1970	36.6 m	6,541
MUD SPRING GULCH	Montana	Good	2013	12.1 m	6,444
INT THREE FORKS I 90	Montana	Fair	2012	84.0 m	6,444
DRAINAGE	Montana	Fair	1958	9.2 m	6,411
RR	Montana	Fair	1958	65.8 m	6,411
INT S LIVINGSTON-US HWY	Montana	Fair	1962	77.0 m	6,397
SEP S 295	Montana	Fair	1962	39.0 m	6,397
SEP S 295	Montana	Fair	1962	39.0 m	6,397

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.