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 |
|---|---|---|---|---|---|
| LEMHI RIVER | Idaho | Fair | 1968 | 13.4 m | 50 |
| LEMHI RIVER(HIGH BR) | Idaho | Fair | 1992 | 22.9 m | 50 |
| LEMHI RIVER(BAGLEY BR) | Idaho | Poor | 1991 | 22.6 m | 50 |
| WIMPEY CREEK | Idaho | Good | 2013 | 13.4 m | 50 |
| PRATT CREEK (#1) | Idaho | Good | 2018 | 11.6 m | 50 |
| E. FK. CROOKED RIVER | Idaho | Good | 2004 | 11.3 m | 50 |
| HAWLEY CREEK | Idaho | Good | 2014 | 12.5 m | 50 |
| LEMHI RIVER | Idaho | Fair | 1965 | 7.9 m | 50 |
| STEAMBOAT CREEK | Idaho | Poor | 1956 | 15.4 m | 50 |
| ALLISON CREEK | Idaho | Fair | 1964 | 7.3 m | 50 |
| WARM SLOUGH | Idaho | Fair | 1968 | 21.9 m | 50 |
| INDEPENDENT CANAL | Idaho | Fair | 2002 | 6.4 m | 50 |
| N.FK.TETON RIVER | Idaho | Good | 1977 | 18.3 m | 50 |
| CANYON CREEK | Idaho | Fair | 1975 | 8.2 m | 50 |
| TEXAS SLOUGH;NW.THORNTON | Idaho | Fair | 1977 | 12.2 m | 50 |
| SHEEP CREEK | Idaho | Good | 1985 | 6.1 m | 50 |
| BEAVER CREEK | Idaho | Fair | 1953 | 8.8 m | 50 |
| COPPER CREEK | Idaho | Good | 2002 | 8.5 m | 50 |
| LITTLE BEAR CREEK | Idaho | Good | 2020 | 17.7 m | 50 |
| N.F. ST JOE RIVER | Idaho | Fair | 1935 | 43.9 m | 50 |
| SQ___ CREEK | Idaho | Fair | 1938 | 10.1 m | 50 |
| EAST FORK SALMON RIVER | Idaho | Fair | 1960 | 12.2 m | 50 |
| SKI TRAIL | Idaho | Fair | 1995 | 13.7 m | 50 |
| WARREN CR | Idaho | Fair | 1969 | 7.9 m | 50 |
| NORTH FORK SALMON | Idaho | Fair | 1952 | 16.8 m | 50 |
| NORTH FORK WOOD RIVER | Idaho | Poor | 1950 | 10.4 m | 50 |
| RED RIVER | Idaho | Fair | 1960 | 15.3 m | 50 |
| ROCK CREEK | Idaho | Good | 2024 | 12.2 m | 50 |
| MEADOW CREEK | Idaho | Fair | 1991 | 11.0 m | 50 |
| FRENCH CREEK | Idaho | Poor | 1957 | 9.9 m | 50 |
| FRENCHMAN CREEK | Idaho | Good | 2024 | 8.5 m | 50 |
| MOOSE CREEK | Idaho | Fair | 1979 | 9.1 m | 50 |
| RUNNING CR | Idaho | Poor | 1956 | 9.9 m | 50 |
| MALLARD CREEK | Idaho | Fair | 1992 | 12.2 m | 50 |
| MALLARD CREEK | Idaho | Fair | 1992 | 9.9 m | 50 |
| TEXAS SLOUGH CANAL | Idaho | Good | 1972 | 8.2 m | 50 |
| CDA RIVER | Idaho | Fair | 1974 | 67.4 m | 50 |
| NORTH FORK SALMON | Idaho | Fair | 1956 | 12.2 m | 50 |
| LITTLE MALLARD CREEK | Idaho | Poor | 1984 | 7.3 m | 50 |
| RED RIVER | Idaho | Fair | 1965 | 12.2 m | 50 |
| WILDHORSE CREEK | Idaho | Good | 1955 | 11.0 m | 50 |
| EAST FORK WOOD RIVER | Idaho | Good | 1974 | 8.5 m | 50 |
| WEST FORK NEWSOME CREEK | Idaho | Good | 2019 | 13.0 m | 50 |
| BIG CREEK | Idaho | Good | 2019 | 19.0 m | 50 |
| SELWAY RIVER | Idaho | Poor | 1934 | 68.3 m | 50 |
| FOURTH OF JULY CREEK | Idaho | Fair | 2004 | 8.5 m | 50 |
| SEVEN SUCKERS DITCH | Idaho | Fair | 1950 | 7.0 m | 50 |
| NORTH FORK SALMON | Idaho | Fair | 1959 | 10.4 m | 50 |
| EAST FORK SALMON RIVER | Idaho | Fair | 1989 | 19.5 m | 50 |
| MILL SLOUGH | Idaho | Good | 2021 | 9.1 m | 50 |
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.