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 |
|---|---|---|---|---|---|
| BISSELL LANE RD.GS | Idaho | Fair | 1971 | 38.4 m | 6,000 |
| MARSH VALLEY ROAD | Idaho | Fair | 1971 | 38.7 m | 6,000 |
| MARSH VALLEY ROAD | Idaho | Fair | 1971 | 38.7 m | 6,000 |
| WOODLAND RD.GS | Idaho | Fair | 1971 | 42.4 m | 6,000 |
| WOODLAND RD.GS | Idaho | Fair | 1971 | 42.4 m | 6,000 |
| SH 40;DOWNEY IC | Idaho | Fair | 1971 | 49.4 m | 6,000 |
| SH 40;DOWNEY IC | Idaho | Fair | 1971 | 49.4 m | 6,000 |
| BOISE VRT CENTER | Idaho | Good | 2016 | 43.9 m | 6,000 |
| ROCK CREEK | Idaho | Poor | 1973 | 6.4 m | 6,000 |
| BOULDER CREEK | Idaho | Fair | 1999 | 17.4 m | 6,000 |
| LAKE FORK CREEK CANAL | Idaho | Fair | 1998 | 9.8 m | 6,000 |
| N CANAL | Idaho | Fair | 1983 | 7.3 m | 5,900 |
| FARMERS UNION CANAL | Idaho | Fair | 1962 | 6.1 m | 5,900 |
| FARMERS UNION CANAL | Idaho | Good | 1992 | 12.5 m | 5,900 |
| DRY CREEK CANAL | Idaho | Good | 1991 | 18.3 m | 5,900 |
| N CANAL | Idaho | Good | 1983 | 7.3 m | 5,900 |
| I 84 EB-WB;E.BLISS IC | Idaho | Fair | 1974 | 111.9 m | 5,900 |
| N CANAL | Idaho | Good | 1983 | 7.3 m | 5,900 |
| DRY CREEK | Idaho | Good | 1991 | 8.2 m | 5,900 |
| FARMERS UNION CANAL | Idaho | Good | 1993 | 10.7 m | 5,900 |
| CEDAR CREEK DRAW | Idaho | Fair | 2002 | 24.4 m | 5,900 |
| FARMERS UNION CANAL | Idaho | Good | 1984 | 9.1 m | 5,900 |
| HIGH LINE CANAL | Idaho | Fair | 1956 | 23.9 m | 5,800 |
| ANDERSON CANAL | Idaho | Fair | 1969 | 18.0 m | 5,800 |
| EAGLE ROCK CANAL | Idaho | Fair | 1969 | 14.0 m | 5,800 |
| PARADISE CREEK | Idaho | Good | 1997 | 8.2 m | 5,800 |
| S.FK.COEUR DALENE RIVER | Idaho | Fair | 1978 | 57.6 m | 5,750 |
| S.FK.COEUR DALENE RIVER | Idaho | Fair | 1978 | 56.1 m | 5,750 |
| DIVISION STREET | Idaho | Good | 2022 | 50.3 m | 5,750 |
| DIVISION STREET | Idaho | Good | 2023 | 50.3 m | 5,750 |
| RAFT RIVER | Idaho | Fair | 1973 | 15.5 m | 5,750 |
| RAFT RIVER | Idaho | Fair | 1967 | 15.8 m | 5,750 |
| JOHNSON CREEK | Idaho | Fair | 1970 | 43.9 m | 5,700 |
| RIDENBAUGH CANAL | Idaho | Good | 1990 | 9.8 m | 5,700 |
| PORTNEUF RIVER | Idaho | Good | 2011 | 105.5 m | 5,700 |
| PORTNEUF RIVER | Idaho | Fair | 2011 | 60.4 m | 5,700 |
| UPRR & CANAL; TOPAZ OP | Idaho | Fair | 2011 | 186.8 m | 5,700 |
| PORTNEUF RIVER | Idaho | Good | 2008 | 55.2 m | 5,700 |
| LINDSAY CREEK | Idaho | Fair | 1997 | 15.5 m | 5,700 |
| N. FK. PAYETTE RIVER | Idaho | Good | 2015 | 76.2 m | 5,700 |
| S.FK.COEUR DALENE RIVER | Idaho | Fair | 1976 | 36.6 m | 5,600 |
| US 93 | Idaho | Fair | 2011 | 81.7 m | 5,600 |
| PALOUSE RIVER | Idaho | Fair | 2002 | 41.8 m | 5,600 |
| SPRING CREEK | Idaho | Poor | 1975 | 13.1 m | 5,600 |
| S.FK.LEIGH CREEK | Idaho | Good | 1979 | 10.7 m | 5,600 |
| UPRR;SODAS 3RD E.ST OP | Idaho | Fair | 1978 | 24.1 m | 5,600 |
| IDAHO CANAL | Idaho | Fair | 2013 | 17.7 m | 5,600 |
| MONROE CREEK | Idaho | Good | 1999 | 13.1 m | 5,600 |
| GALLOWAY CANAL | Idaho | Good | 1999 | 8.2 m | 5,600 |
| RAMP;SNAKE RIVER;HIGH BR | Idaho | Good | 1982 | 167.6 m | 5,550 |
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.