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 |
|---|---|---|---|---|---|
| UPRR | Idaho | Good | 1969 | 44.5 m | 26,000 |
| BUTTE ARM CANAL | Idaho | Good | 2003 | 8.5 m | 26,000 |
| UPRR | Idaho | Good | 1969 | 44.7 m | 26,000 |
| RIDENBAUGH CANAL | Idaho | Fair | 1970 | 13.7 m | 26,000 |
| UPRR;INDIAN CR;CALDWELL | Idaho | Fair | 1983 | 86.9 m | 26,000 |
| SNAKE RIVER | Idaho | Fair | 1971 | 135.0 m | 26,000 |
| PHYLLIS CANAL | Idaho | Fair | 1987 | 8.2 m | 26,000 |
| STC7405; PENN AVE GS | Idaho | Good | 2020 | 50.6 m | 25,500 |
| ELIJAH DRAIN | Idaho | Fair | 1973 | 16.5 m | 25,000 |
| WILSON DRAIN | Idaho | Fair | 1973 | 14.6 m | 25,000 |
| FIVE MILE CREEK | Idaho | Good | 2004 | 6.7 m | 25,000 |
| N CANAL | Idaho | Fair | 1966 | 11.3 m | 24,500 |
| I 84;FRANKLIN BLVD IC | Idaho | Fair | 2000 | 68.6 m | 24,500 |
| I 84;COLE/OVERLAND IC | Idaho | Fair | 1996 | 65.8 m | 24,500 |
| I 184B;CURTIS RD IC | Idaho | Fair | 1968 | 61.9 m | 24,500 |
| SNAKE R;FRUITLAND BRIDGE | Idaho | Good | 1967 | 270.4 m | 24,500 |
| RIDENBAUGH CANAL | Idaho | Good | 1995 | 7.9 m | 24,000 |
| I 84;FIVE MILE RD GS | Idaho | Fair | 1966 | 67.1 m | 24,000 |
| US 20 26;FEDERAL WAY IC | Idaho | Fair | 1970 | 103.3 m | 24,000 |
| I 15 NB-SB;JOHNS HOLE IC | Idaho | Good | 1962 | 59.7 m | 24,000 |
| IDAHO CANAL | Idaho | Good | 1969 | 11.3 m | 24,000 |
| LOGGERS CREEK | Idaho | Fair | 1979 | 23.5 m | 23,500 |
| RIDENBAUGH CANAL | Idaho | Good | 2008 | 9.1 m | 23,000 |
| FINCH LATERAL | Idaho | Fair | 2008 | 7.3 m | 23,000 |
| TEN MILE CREEK | Idaho | Fair | 1986 | 7.9 m | 23,000 |
| C CANAL | Idaho | Fair | 1966 | 7.3 m | 23,000 |
| PHYLLIS CANAL | Idaho | Good | 1970 | 7.9 m | 23,000 |
| I 84;MAPLE GROVE RD GS | Idaho | Good | 1989 | 106.4 m | 23,000 |
| NOTUS CANAL | Idaho | Good | 1964 | 7.0 m | 22,750 |
| BOISE RIVER;N CHANNEL | Idaho | Fair | 1985 | 6.4 m | 22,500 |
| UPRR;QUINN ROAD OP | Idaho | Good | 1986 | 32.3 m | 22,500 |
| FARMERS UNION CANAL | Idaho | Fair | 1985 | 15.5 m | 22,500 |
| BUTTE ARM CANAL | Idaho | Fair | 1959 | 13.7 m | 22,500 |
| RIDENBAUGH CANAL | Idaho | Fair | 1995 | 10.4 m | 22,500 |
| I 84B;NAMPA 11TH AVE UP | Idaho | Good | 2003 | 21.9 m | 22,500 |
| BOISE RIVER | Idaho | Fair | 1984 | 105.5 m | 22,500 |
| SNAKE R;HIGH/SOUTHWAY BR | Idaho | Fair | 1982 | 568.8 m | 22,000 |
| PHYLLIS CANAL | Idaho | Fair | 1990 | 29.9 m | 22,000 |
| B-4 CANAL | Idaho | Good | 2024 | 37.5 m | 22,000 |
| BOISE RIVER;S.CHANNEL | Idaho | Fair | 1993 | 32.0 m | 22,000 |
| BOISE R;MIDDLE CHANNEL | Idaho | Fair | 1991 | 14.9 m | 22,000 |
| NOTUS CANAL | Idaho | Good | 2009 | 6.4 m | 22,000 |
| I 84;SH 69 MERIDIAN IC | Idaho | Good | 2015 | 60.0 m | 22,000 |
| PHYLLIS CANAL | Idaho | Fair | 1963 | 9.1 m | 22,000 |
| RIDENBAUGH CANAL | Idaho | Fair | 2011 | 11.6 m | 22,000 |
| BOISE RIVER;N. CHANNEL | Idaho | Good | 1992 | 131.4 m | 22,000 |
| FIVE MILE CREEK | Idaho | Good | 1992 | 6.1 m | 21,500 |
| FIVE MILE CREEK | Idaho | Fair | 2020 | 7.6 m | 21,500 |
| I 84; TEN MILE RD IC | Idaho | Good | 2011 | 57.6 m | 21,000 |
| MASON CRK;FEEDER CANAL | Idaho | Fair | 1990 | 9.1 m | 21,000 |
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.