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
INT VAN BUREN STREET	Montana	Good	1964	50.3 m	15,284
HOGAN SLOUGH	Montana	Fair	1959	25.0 m	15,229
RR	Montana	Fair	1994	125.5 m	15,102
ABANDONED RAILROAD	Montana	Good	2019	6.6 m	15,011
SEP BOULDER AVE-RR	Montana	Fair	2016	241.1 m	14,810
SEP BOULDER AVE-RR	Montana	Fair	2017	239.0 m	14,810
YELLOWSTONE RIVER	Montana	Fair	2022	297.2 m	14,744
Yellowstone River	Montana	Fair	2023	297.2 m	14,744
SILVER BOW CREEK	Montana	Fair	1970	9.4 m	14,718
CORVALLIS CANAL	Montana	Good	1980	17.4 m	14,714
HELENA VALLEY CANAL	Montana	Good	2012	15.4 m	14,653
BITTERROOT RIVER	Montana	Fair	2005	168.2 m	14,573
BLODGETT CREEK	Montana	Fair	2008	25.5 m	14,573
MISSOURI R-RIVERS TRAIL	Montana	Fair	1962	343.1 m	14,369
INT CEDAR ST-I 15	Montana	Fair	2002	60.0 m	14,368
MISSOURI RIVER	Montana	Fair	1996	375.6 m	14,024
SWEATHOUSE CREEK	Montana	Good	2010	25.5 m	13,924
S FORK BEAR CREEK	Montana	Fair	2011	37.1 m	13,924
N FORK BEAR CREEK	Montana	Good	2011	21.8 m	13,924
SUN RIVER	Montana	Fair	1980	154.2 m	13,800
WHITEFISH RIVER	Montana	Good	1975	43.6 m	13,795
STILLWATER RIVER	Montana	Fair	1966	56.1 m	13,680
STILLWATER RIVER	Montana	Fair	1966	56.1 m	13,680
MISSOURI RIVER-U5205-RR	Montana	Fair	1983	646.6 m	13,666
MISSOURI RIVER-U5205-RR	Montana	Fair	1951	637.7 m	13,666
SEP COAL MINE ROAD	Montana	Fair	1966	42.1 m	13,664
SEP COAL MINE ROAD	Montana	Good	1966	42.1 m	13,664
INT RESERVE STREET	Montana	Poor	1966	59.4 m	13,664
INT RESERVE STREET	Montana	Fair	1966	59.4 m	13,664
LAUREL ROAD	Montana	Fair	2007	52.3 m	13,348
HARVEY CREEK	Montana	Good	1970	6.9 m	13,081
CLARK FORK RIVER	Montana	Poor	1970	77.6 m	13,081
RATTLER GULCH	Montana	Fair	1971	6.4 m	13,081
SEP BEARMOUTH ROAD	Montana	Good	1970	36.3 m	13,081
DRAINAGE	Montana	Good	1971	7.7 m	13,081
CHURCH DRIVE	Montana	Fair	2008	43.0 m	12,960
CHURCH DRIVE	Montana	Fair	2008	43.0 m	12,960
SPRING CREEK	Montana	Fair	1966	28.3 m	12,793
BBWA CANAL	Montana	Fair	2000	16.7 m	12,688
INT I 15	Montana	Fair	1967	90.7 m	12,651
BBWA CANAL	Montana	Fair	1964	12.5 m	12,397
BBWA CANAL	Montana	Fair	1964	12.5 m	12,397
INT MOSSMAIN ROAD-P 4	Montana	Fair	1964	36.6 m	12,397
INT MOSSMAIN ROAD-P 4	Montana	Fair	1964	36.6 m	12,397
SEP S 56TH ST W	Montana	Fair	1961	46.6 m	12,397
SEP S 56TH ST W	Montana	Fair	1961	46.6 m	12,397
CANYON CREEK	Montana	Good	1959	46.6 m	12,397
CANYON CREEK	Montana	Fair	1959	46.6 m	12,397
RR	Montana	Fair	2014	115.8 m	12,394
YELLOWSTONE RIVER	Montana	Good	1997	156.3 m	12,394

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.