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 |
|---|---|---|---|---|---|
| I 84;100 SOUTH RD GS 1 | Idaho | Fair | 1965 | 77.4 m | 1,400 |
| BIG WOOD RIVER | Idaho | Good | 1991 | 36.3 m | 1,400 |
| BIG WOOD RIVER | Idaho | Fair | 1958 | 32.6 m | 1,400 |
| BIG WOOD RIVER | Idaho | Good | 2020 | 28.0 m | 1,400 |
| DEER FLAT HIGH LINE CNL | Idaho | Fair | 1997 | 7.3 m | 1,400 |
| CHALLIS CREEK | Idaho | Good | 1991 | 11.0 m | 1,400 |
| SALMON RIVER;CHALLIS BR. | Idaho | Good | 1995 | 93.3 m | 1,400 |
| I 86;TRUCKERVILLE IC | Idaho | Fair | 1972 | 79.9 m | 1,400 |
| S.FK.COEUR DALENE RIVER | Idaho | Fair | 1949 | 58.2 m | 1,400 |
| HIGH LINE CANAL | Idaho | Fair | 1964 | 25.6 m | 1,400 |
| LOW LINE CANAL | Idaho | Fair | 1964 | 25.3 m | 1,400 |
| LITTLE WOOD RIVER | Idaho | Good | 2023 | 12.3 m | 1,400 |
| SIDEHILL CANAL | Idaho | Good | 1981 | 9.4 m | 1,400 |
| DANSKIN CANAL | Idaho | Good | 1968 | 6.7 m | 1,400 |
| TYHEE LATERAL CANAL | Idaho | Good | 1949 | 7.3 m | 1,400 |
| PAYETTE RIVER;E.LETHA BR | Idaho | Fair | 1960 | 109.7 m | 1,400 |
| PAYETTE RIVER | Idaho | Poor | 1959 | 123.1 m | 1,400 |
| FARMERS COOP CANAL | Idaho | Fair | 1965 | 7.9 m | 1,400 |
| I 15;W.PORTERVILLE RD.GS | Idaho | Fair | 1962 | 77.4 m | 1,400 |
| B-2 CANAL | Idaho | Fair | 1975 | 7.0 m | 1,400 |
| N CANAL | Idaho | Fair | 1995 | 7.9 m | 1,400 |
| MORA CANAL | Idaho | Fair | 1975 | 15.5 m | 1,400 |
| E.BR.SNAKE R.VALLEY CNL | Idaho | Fair | 1977 | 7.3 m | 1,300 |
| PHYLLIS CANAL | Idaho | Fair | 1967 | 11.6 m | 1,300 |
| JIMMY BYRNES SLOUGH | Idaho | Fair | 1987 | 10.5 m | 1,300 |
| FARMERS COOP CANAL | Idaho | Fair | 1940 | 7.9 m | 1,300 |
| FARMERS COOP CANAL | Idaho | Fair | 1955 | 9.8 m | 1,300 |
| A LINE CANAL | Idaho | Fair | 1965 | 8.8 m | 1,300 |
| GALLOWAY CANAL | Idaho | Fair | 1990 | 7.3 m | 1,300 |
| J CANAL | Idaho | Fair | 2006 | 17.7 m | 1,300 |
| MONTPELIER CK;LOWER NRWS | Idaho | Good | 2008 | 9.8 m | 1,300 |
| MONTPELIER CK;UPPER NRWS | Idaho | Good | 2008 | 21.0 m | 1,300 |
| MONTPELIER CREEK | Idaho | Good | 2003 | 6.4 m | 1,300 |
| BUTTE ARM CANAL | Idaho | Fair | 1958 | 8.2 m | 1,300 |
| ANDERSON CANAL | Idaho | Fair | 1954 | 7.3 m | 1,300 |
| BLACKFOOT CANAL | Idaho | Fair | 1972 | 12.8 m | 1,300 |
| I 15; ROSE ROAD IC | Idaho | Good | 2020 | 72.2 m | 1,300 |
| MIDDLETON CANAL | Idaho | Fair | 1967 | 7.6 m | 1,300 |
| SAND CREEK | Idaho | Fair | 1962 | 12.8 m | 1,300 |
| NORTH FORK WILLOW CREEK | Idaho | Fair | 1963 | 11.6 m | 1,300 |
| HIGH LINE CANAL | Idaho | Fair | 1968 | 22.6 m | 1,300 |
| RAPID CREEK | Idaho | Good | 2015 | 10.4 m | 1,300 |
| RIDENBAUGH CANAL | Idaho | Fair | 1971 | 8.2 m | 1,300 |
| S.FK.COEUR DALENE RIVER | Idaho | Fair | 1983 | 34.7 m | 1,300 |
| PACK RIVER | Idaho | Fair | 1951 | 37.2 m | 1,300 |
| T.F.NORTHSIDE MAIN CNL | Idaho | Fair | 1930 | 13.4 m | 1,300 |
| I 86 EB-WB;AIRPORT IC | Idaho | Poor | 1968 | 95.1 m | 1,300 |
| SAND CREEK | Idaho | Fair | 1953 | 22.9 m | 1,300 |
| LITTLE SAND CREEK | Idaho | Fair | 1961 | 11.6 m | 1,300 |
| PARADISE CREEK | Idaho | Good | 2009 | 9.1 m | 1,300 |
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.