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.

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BridgeLocationConditionYear BuiltLengthADT
TRAIL CREEK Idaho Good 1988 6.1 m 5,000
RR ROADBED/NO TRACKS Idaho Fair 1975 56.4 m 5,000
MILNER GOODING CANAL Idaho Good 2013 10.4 m 5,000
BIG WOOD RIVER Idaho Fair 2013 50.9 m 5,000
RIDENBAUGH CANAL Idaho Good 1992 12.5 m 5,000
PHYLLIS CANAL Idaho Fair 1995 6.7 m 5,000
BOISE RIVER;RAMP DA BR Idaho Fair 1980 122.2 m 5,000
BOISE RIVER;RAMP AB BR Idaho Fair 1980 122.8 m 5,000
CLWATER R.;NPRR;ARROW BR Idaho Fair 1972 380.4 m 4,900
COTTONWOOD CREEK Idaho Fair 1997 27.7 m 4,900
MIDDLETON CANAL Idaho Fair 1971 7.9 m 4,900
FALL RIVER CANAL Idaho Fair 1973 9.8 m 4,900
FALL RIVER CANAL Idaho Fair 1994 10.1 m 4,900
BUTTE ARM CANAL Idaho Fair 1943 12.8 m 4,900
DRY CREEK Idaho Fair 1959 7.0 m 4,900
UPRR;PAYETTE OVERPASS Idaho Fair 1962 195.7 m 4,900
MARSH CREEK Idaho Fair 1960 7.3 m 4,900
ST MARIES RR Idaho Good 2019 36.3 m 4,800
ST JOE RIVER Idaho Good 2019 131.4 m 4,800
I 84; BLACK CAT RD GS Idaho Good 2009 59.7 m 4,800
OAKLAND WASTE DITCH Idaho Good 1976 6.7 m 4,800
RIDENBAUGH CANAL Idaho Fair 1991 9.8 m 4,800
BLACKFOOT CANAL Idaho Good 2004 8.5 m 4,800
RIDENBAUGH CANAL Idaho Good 1992 10.4 m 4,800
UPRR;12TH ST.;MONTPELIER Idaho Fair 1971 219.5 m 4,800
CLEARWATER R.(KAMIAH BR) Idaho Fair 1998 204.8 m 4,700
PORTNEUF RIVER;MCCAMMON Idaho Fair 1963 63.1 m 4,700
UPRR;N.MCCAMMON OP Idaho Fair 1963 56.7 m 4,700
NOBLE CANAL Idaho Fair 1956 9.8 m 4,700
SNAKE RIVER;KEN CURTIS Idaho Fair 1968 61.3 m 4,700
FARMERS UNION CANAL Idaho Fair 1992 7.3 m 4,700
BURLINGTON NORTHERN RR Idaho Good 2019 72.2 m 4,700
N.FK.PAYETTE RIVER Idaho Fair 1984 87.5 m 4,700
S.FK.TETON RIVER Idaho Fair 1977 32.9 m 4,700
CEDAR POINT CANAL Idaho Good 2004 6.1 m 4,600
PHYLLIS CANAL Idaho Good 2003 7.9 m 4,600
SIDDOWAY CANAL Idaho Fair 1984 6.4 m 4,600
TYHEE WASTEWAY CANAL Idaho Fair 1925 9.8 m 4,600
PORTNEUF RIVER Idaho Good 2023 21.3 m 4,600
RESERVATION CANAL Idaho Good 2000 14.3 m 4,600
BLACKFOOT CANAL Idaho Poor 1951 13.1 m 4,600
IDAHO CANAL Idaho Fair 1957 21.3 m 4,500
US 95R SBL;LEWISTON IC Idaho Fair 1977 115.8 m 4,500
PORTNEUF RIVER Idaho Fair 1953 17.1 m 4,500
RICHFIELD CANAL Idaho Fair 1955 27.4 m 4,500
PARADISE CREEK Idaho Good 2010 19.5 m 4,500
DRY CREEK Idaho Good 2018 20.7 m 4,500
BIG WOOD RIVER Idaho Fair 1955 30.5 m 4,500
SPRING CREEK Idaho Fair 1961 7.9 m 4,400
INL CENTRAL CONNECTOR Idaho Fair 1993 8.5 m 4,400

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.