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 |
|---|---|---|---|---|---|
| J CANAL;SW DECLO BR | Idaho | Fair | 1978 | 14.0 m | 170 |
| H CANAL | Idaho | Fair | 1983 | 6.4 m | 170 |
| NOBLE CANAL | Idaho | Fair | 1966 | 7.6 m | 170 |
| FARMERS COOP CANAL | Idaho | Fair | 1950 | 9.1 m | 170 |
| T.F.NORTHSIDE MAIN CNL | Idaho | Fair | 1930 | 9.1 m | 170 |
| T.F.NORTHSIDE MAIN CNL | Idaho | Fair | 1930 | 9.1 m | 170 |
| WILLOW CREEK | Idaho | Fair | 1945 | 18.3 m | 170 |
| N CANAL | Idaho | Good | 1964 | 7.6 m | 170 |
| LONG ISLAND CANAL | Idaho | Fair | 1969 | 12.5 m | 170 |
| L CANAL | Idaho | Fair | 1975 | 12.5 m | 170 |
| LITTLE CANYON CREEK | Idaho | Poor | 1995 | 7.3 m | 170 |
| LITTLE CANYON CREEK | Idaho | Poor | 1970 | 15.5 m | 170 |
| LOW LINE CANAL | Idaho | Fair | 1953 | 14.6 m | 170 |
| BIG LOST RIVER | Idaho | Fair | 1973 | 18.0 m | 170 |
| SALMON RIVER;BAYHORSE CR | Idaho | Fair | 1930 | 37.2 m | 170 |
| POTLATCH RVR(SPERRY BR) | Idaho | Fair | 1908 | 73.8 m | 170 |
| GOLDEN GATE CANAL | Idaho | Fair | 2002 | 7.7 m | 170 |
| RIVERSIDE CANAL | Idaho | Fair | 1995 | 9.1 m | 170 |
| S.FK.CDA RIVER | Idaho | Fair | 1964 | 11.6 m | 160 |
| BANNOCK CR.;RATTLESNAKE | Idaho | Good | 1964 | 8.8 m | 160 |
| SNAKE RIVER(KINGHILL BR) | Idaho | Fair | 2001 | 109.7 m | 160 |
| CLOVER CREEK;KING HILL | Idaho | Fair | 1970 | 52.1 m | 160 |
| I 84;E.KING HILL IC | Idaho | Fair | 1970 | 82.9 m | 160 |
| AMERICAN RIVER | Idaho | Good | 2014 | 14.3 m | 160 |
| GRAYS CREEK | Idaho | Good | 2024 | 15.1 m | 160 |
| GRAYS CREEK | Idaho | Fair | 1930 | 8.2 m | 160 |
| SIEGEL CREEK | Idaho | Good | 1964 | 7.9 m | 160 |
| WHISKEY CREEK | Idaho | Good | 2019 | 19.8 m | 160 |
| SPRING CREEK | Idaho | Fair | 1998 | 9.4 m | 160 |
| DRY CREEK | Idaho | Fair | 1969 | 8.5 m | 160 |
| SHERIDAN CREEK | Idaho | Fair | 1966 | 7.3 m | 160 |
| NORTH CANAL | Idaho | Fair | 1984 | 9.4 m | 160 |
| ANDERSON CANAL | Idaho | Fair | 1971 | 11.9 m | 160 |
| LITTLE SAND CREEK | Idaho | Fair | 1959 | 8.5 m | 160 |
| SAND CREEK | Idaho | Good | 2010 | 14.6 m | 160 |
| RESERVATION CANAL | Idaho | Fair | 1974 | 19.2 m | 160 |
| I 15;WILLIE ROAD GS | Idaho | Poor | 1959 | 64.6 m | 160 |
| I 15 NB-SB;CO.LINE RD.GS | Idaho | Fair | 1962 | 77.4 m | 160 |
| RELIEF CHANNEL | Idaho | Fair | 1964 | 10.1 m | 160 |
| PORTNEUF RIVER | Idaho | Fair | 2008 | 21.3 m | 160 |
| ST JOE RIVER;CALDER BR. | Idaho | Fair | 1990 | 90.2 m | 160 |
| I 86;ROCK CREEK RD IC | Idaho | Fair | 1984 | 108.2 m | 160 |
| MULDOON CREEK | Idaho | Good | 2021 | 12.2 m | 160 |
| JACKKNIFE CREEK | Idaho | Fair | 1976 | 7.3 m | 160 |
| H CANAL | Idaho | Fair | 1976 | 9.1 m | 160 |
| T.F.NORTHSIDE MAIN CNL | Idaho | Fair | 1930 | 9.4 m | 160 |
| I 84 EB-WB;E 2800 S GS | Idaho | Good | 1972 | 155.1 m | 160 |
| BIG LOST RIVER(PENCE BR) | Idaho | Good | 2018 | 34.4 m | 160 |
| INDEPENDENT CANAL | Idaho | Fair | 1962 | 8.8 m | 160 |
| INDEPENDENT CANAL | Idaho | Fair | 1976 | 10.1 m | 160 |
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.