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 |
|---|---|---|---|---|---|
| S.FK.CDA R;TERROR GULCH | Idaho | Fair | 1973 | 24.4 m | 900 |
| MUD CREEK | Idaho | Fair | 2004 | 16.2 m | 900 |
| ANDERSON CANAL | Idaho | Fair | 1954 | 6.7 m | 900 |
| PALOUSE RIVER | Idaho | Fair | 1974 | 24.4 m | 900 |
| SAND CREEK | Idaho | Fair | 1981 | 14.0 m | 890 |
| KALISPELL CREEK | Idaho | Good | 2020 | 14.0 m | 880 |
| BROWN CREEK | Idaho | Fair | 1954 | 18.9 m | 880 |
| LEMHI RIVER (ALLEN BR) | Idaho | Good | 2016 | 22.6 m | 880 |
| PINE CREEK | Idaho | Fair | 1977 | 29.3 m | 880 |
| PINE CREEK | Idaho | Fair | 1953 | 26.5 m | 880 |
| PINE CREEK | Idaho | Fair | 1977 | 29.3 m | 880 |
| PINE CREEK | Idaho | Good | 2019 | 40.2 m | 880 |
| PACK RIVER | Idaho | Poor | 1941 | 29.3 m | 870 |
| HIGH LINE CANAL | Idaho | Good | 2006 | 22.8 m | 870 |
| GROUSE CREEK | Idaho | Poor | 1941 | 19.8 m | 870 |
| ABERDEEN SPRINGFIELD CNL | Idaho | Fair | 1978 | 25.6 m | 870 |
| PEOPLES CANAL | Idaho | Fair | 1978 | 12.8 m | 870 |
| LEMHI RIVER | Idaho | Good | 2018 | 25.9 m | 860 |
| LEMHI RIVER | Idaho | Good | 2018 | 20.1 m | 860 |
| LEMHI RIVER | Idaho | Good | 2018 | 25.9 m | 860 |
| LEMHI RIVER | Idaho | Good | 2019 | 25.0 m | 860 |
| LEMHI RIVER | Idaho | Good | 2019 | 25.0 m | 860 |
| LEMHI RIVER | Idaho | Good | 2019 | 24.7 m | 860 |
| LEMHI RIVER | Idaho | Good | 2019 | 25.3 m | 860 |
| AGENCY CREEK | Idaho | Good | 2019 | 7.3 m | 860 |
| LEMHI RIVER | Idaho | Good | 2018 | 25.6 m | 860 |
| DANSKIN CANAL | Idaho | Fair | 1965 | 6.4 m | 860 |
| US 12 WB; LEWISTON IC | Idaho | Fair | 1977 | 61.0 m | 850 |
| I 84;BASELINE SIMCO IC | Idaho | Good | 2024 | 68.3 m | 850 |
| S.FK.COTTONWOOD CREEK | Idaho | Good | 1977 | 7.6 m | 850 |
| COTTONWOOD CREEK | Idaho | Fair | 1947 | 11.6 m | 850 |
| CLEAR CREEK | Idaho | Good | 2021 | 25.6 m | 850 |
| BLACK CANYON CANAL | Idaho | Fair | 1973 | 18.9 m | 840 |
| BUTTE ARM CANAL | Idaho | Fair | 2005 | 7.9 m | 840 |
| BUTTE ARM CANAL | Idaho | Fair | 2006 | 9.1 m | 840 |
| FARMERS COOP SEBREE CNL | Idaho | Fair | 1990 | 10.1 m | 830 |
| GALLOWAY CANAL | Idaho | Good | 1971 | 7.3 m | 830 |
| LOWER PAYETTE DITCH | Idaho | Good | 2024 | 12.2 m | 830 |
| MAIN CANAL | Idaho | Good | 1969 | 18.3 m | 820 |
| COEUR DALENE RIVER | Idaho | Fair | 2007 | 184.7 m | 820 |
| MAIN FORK STUART GULCH | Idaho | Good | 1998 | 18.6 m | 820 |
| WEISER RIVER | Idaho | Fair | 1995 | 78.3 m | 820 |
| FERNAN LAKE | Idaho | Good | 2010 | 135.3 m | 820 |
| CLARK FORK RIVER | Idaho | Fair | 2004 | 306.6 m | 820 |
| I 15 NB-SB;E 200 N GS | Idaho | Fair | 1968 | 78.6 m | 810 |
| MARKET LAKE CANAL | Idaho | Good | 1959 | 6.4 m | 810 |
| WARM SPRING CREEK | Idaho | Good | 2018 | 7.0 m | 810 |
| TRAIL CREEK | Idaho | Good | 2007 | 6.7 m | 810 |
| I90R.AB;I90B;S.F.CDA RVR | Idaho | Fair | 1991 | 198.4 m | 800 |
| BIKE/PED UNDERPASS | Idaho | Fair | 1991 | 119.2 m | 800 |
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.