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 |
|---|---|---|---|---|---|
| TRAIL CREEK | Idaho | Fair | 2004 | 15.5 m | 1,000 |
| WIRR(NW DEARY OP) PATH | Idaho | Good | 2024 | 7.9 m | 1,000 |
| BIG GULCH WASH #4 | Idaho | Good | 2024 | 9.8 m | 1,000 |
| I 15;DEEP CR;SH 36 IC | Idaho | Fair | 1964 | 67.1 m | 1,000 |
| BIG GULCH WASH #5 | Idaho | Good | 2024 | 10.3 m | 1,000 |
| LAWYER CREEK | Idaho | Good | 1972 | 24.4 m | 1,000 |
| DIXIE SLOUGH | Idaho | Good | 2010 | 15.2 m | 1,000 |
| S.FK.COEUR DALENE RIVER | Idaho | Good | 2014 | 25.9 m | 1,000 |
| I 84;E.GLENNS FERRY IC | Idaho | Fair | 1976 | 86.0 m | 1,000 |
| I90;MULLAN TRAIL RD IC | Idaho | Fair | 1991 | 69.8 m | 1,000 |
| S.FK.COEUR DALENE RIVER | Idaho | Fair | 1963 | 14.0 m | 1,000 |
| S.FK.COEUR DALENE RIVER | Idaho | Good | 2014 | 14.9 m | 1,000 |
| ALKALI CREEK | Idaho | Good | 1977 | 12.2 m | 1,000 |
| SALMON RIVER | Idaho | Fair | 1977 | 13.7 m | 1,000 |
| FRENCHMAN CREEK | Idaho | Fair | 1974 | 7.9 m | 1,000 |
| ROCK CREEK | Idaho | Fair | 1991 | 123.7 m | 1,000 |
| HIGH LINE CANAL | Idaho | Fair | 1935 | 29.3 m | 1,000 |
| ROCK CREEK | Idaho | Fair | 1965 | 8.2 m | 1,000 |
| LOW LINE CANAL | Idaho | Good | 1995 | 7.7 m | 1,000 |
| G CANAL | Idaho | Good | 1994 | 6.4 m | 1,000 |
| C CANAL | Idaho | Good | 2007 | 6.1 m | 1,000 |
| TRAIL CREEK | Idaho | Fair | 1980 | 9.8 m | 1,000 |
| FIVE MILE CREEK | Idaho | Good | 2001 | 10.4 m | 1,000 |
| BLACKFOOT RIVER | Idaho | Good | 1980 | 30.5 m | 1,000 |
| S.FK.COEUR DALENE RIVER | Idaho | Fair | 1966 | 30.5 m | 1,000 |
| EAST LATERAL CANAL | Idaho | Fair | 1975 | 7.3 m | 1,000 |
| FARMERS UNION CANAL | Idaho | Fair | 1999 | 6.1 m | 1,000 |
| GREAT WESTERN CANAL | Idaho | Good | 1979 | 7.6 m | 1,000 |
| N.FK.SNAKE R.;HIBBARD BR | Idaho | Fair | 1968 | 39.9 m | 1,000 |
| WARM SLOUGH | Idaho | Fair | 1969 | 26.8 m | 1,000 |
| E LATERAL CANAL | Idaho | Fair | 1928 | 6.7 m | 1,000 |
| TETON RIVER | Idaho | Fair | 1996 | 35.1 m | 1,000 |
| BOISE RIVER | Idaho | Fair | 1980 | 63.4 m | 1,000 |
| TEN MILE CREEK | Idaho | Good | 2019 | 19.2 m | 1,000 |
| SETTLERS CANAL | Idaho | Good | 1972 | 13.1 m | 991 |
| S.F.CLEARWATER;HARPSTER | Idaho | Fair | 1985 | 60.7 m | 990 |
| PAYETTE RIVER;PLAZA BR. | Idaho | Fair | 1959 | 73.2 m | 990 |
| OROFINO CREEK | Idaho | Good | 1971 | 19.5 m | 980 |
| M.F.CLWATER R.;E.KOOSKIA | Idaho | Poor | 1935 | 146.6 m | 980 |
| MORA CANAL | Idaho | Good | 2004 | 6.2 m | 980 |
| PEOPLES CANAL | Idaho | Good | 1989 | 8.2 m | 980 |
| DRAIN DITCH | Idaho | Fair | 1989 | 12.5 m | 980 |
| X-4 LATERAL CANAL | Idaho | Good | 1980 | 12.2 m | 980 |
| MORA CANAL | Idaho | Good | 2024 | 6.4 m | 980 |
| DEER FLAT HIGH LINE CNL | Idaho | Fair | 1986 | 8.2 m | 980 |
| SAND CREEK | Idaho | Fair | 1962 | 12.8 m | 980 |
| GROVE CREEK | Idaho | Fair | 1971 | 9.8 m | 970 |
| LOVING CREEK | Idaho | Good | 1971 | 7.3 m | 970 |
| PINE CREEK;WB ON RAMP | Idaho | Fair | 1965 | 43.0 m | 970 |
| I 84 EB-WB;TUTTLE IC | Idaho | Fair | 1977 | 92.0 m | 970 |
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.