Browse Bridge Database

4,646 bridges in the FHWA National Bridge Inventory in Idaho.

National Bridge Inventory Database

Browse 4,646 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
RIDENBAUGH CANAL	Idaho	Fair	1966	9.1 m	144,500
TEN MILE CREEK	Idaho	Fair	1965	7.0 m	131,000
I 84B ;GARRITY BLVD IC	Idaho	Good	2011	39.9 m	111,000
UPRR;EAST LATERAL CANAL	Idaho	Good	2021	54.3 m	104,000
NORTHSIDE BLVD IC	Idaho	Good	2021	67.1 m	84,500
S7073;CANAL;COLE RD	Idaho	Fair	2001	72.2 m	76,500
S7403;UPRR;FRANKLIN IC	Idaho	Good	2001	130.5 m	76,500
I 84 WBL	Idaho	Good	2001	47.2 m	68,500
NOTUS CANAL	Idaho	Good	2022	7.9 m	68,000
SMA 7923; LINDEN ROAD GS	Idaho	Good	2022	24.4 m	68,000
BNRR;POST FALLS OP	Idaho	Fair	1977	64.0 m	62,000
STP 7773;10TH AVE IC	Idaho	Fair	1983	75.9 m	58,000
I 84 EB-WB;EAGLE RD IC	Idaho	Fair	1990	81.6 m	58,000
SETTLERS CANAL	Idaho	Fair	1967	13.7 m	56,500
PHYLLIS CANAL	Idaho	Good	2012	21.0 m	55,500
PHYLLIS CANAL	Idaho	Good	2012	25.9 m	55,500
UPRR	Idaho	Good	2011	34.7 m	55,500
UPRR	Idaho	Good	2011	34.7 m	55,500
FARMERS SEBREE CANAL	Idaho	Fair	1980	14.3 m	53,500
BOISE RIVER;CALDWELL BR.	Idaho	Fair	1983	90.2 m	53,500
SH 21;GOWEN RD IC	Idaho	Good	2015	53.3 m	52,000
TEN MILE CREEK	Idaho	Fair	1963	6.4 m	49,500
UPRR	Idaho	Good	2006	29.3 m	49,000
NEW YORK CANAL	Idaho	Good	1968	32.9 m	45,750
NEW YORK CANAL	Idaho	Good	1968	32.9 m	45,750
BOISE RIVER;S.CHANNEL	Idaho	Good	1978	37.5 m	45,000
BOISE RIVER;N.CHANNEL	Idaho	Good	1978	74.1 m	41,500
I 90 EB-WB;NW BLVD IC	Idaho	Fair	2001	55.8 m	40,000
PORTER CANAL	Idaho	Fair	1966	10.7 m	38,000
SNAKE R.;JOHNS HOLE BR.	Idaho	Fair	1966	54.6 m	38,000
SMA 7096;RIVERSIDE DR.IC	Idaho	Fair	1969	48.8 m	38,000
SMA 9083;27TH STREET	Idaho	Fair	1990	26.5 m	37,500
BOISE RIVER	Idaho	Fair	1990	182.0 m	37,500
INDIAN CREEK	Idaho	Good	2006	78.6 m	36,000
I 84;KARCHER-MIDLAND IC	Idaho	Good	2006	61.3 m	36,000
WILLOW CREEK	Idaho	Fair	1953	7.9 m	36,000
UPRR;NEW YORK CANAL	Idaho	Fair	1970	92.0 m	35,500
FUTURE NORTH CROSSING	Idaho	Fair	2011	30.5 m	35,000
GARFIELD UCON CANAL	Idaho	Fair	1972	6.4 m	34,500
SAGE CANAL	Idaho	Fair	1970	6.4 m	34,500
FARMERS UNION CANAL	Idaho	Good	2019	23.2 m	34,000
RIDENBAUGH CANAL	Idaho	Fair	1990	9.8 m	34,000
RAWSON CANAL	Idaho	Fair	1990	7.0 m	33,500
I 84 EB-WB;MIDDLETON IC	Idaho	Fair	1964	70.7 m	33,500
I 90 E-WB;LINCOLN WAY IC	Idaho	Fair	1960	58.5 m	33,500
PERRINE COULEE;BIKE PATH	Idaho	Fair	2006	11.9 m	33,000
I 84 EB-WB;BROADWAY IC	Idaho	Good	2015	50.9 m	33,000
AMERICANA BLVD;15TH ST.	Idaho	Fair	1992	167.3 m	32,500
SH 41	Idaho	Good	2024	48.2 m	32,500
I 90 EB OFF RAMP	Idaho	Good	2023	48.5 m	32,500

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.