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 90 EB ON RAMP | Idaho | Good | 2024 | 48.5 m | 32,500 |
| I 90 EB ON RAMP | Idaho | Good | 2023 | 48.5 m | 32,500 |
| AMERICANA BLVD;15TH ST. | Idaho | Fair | 1992 | 167.3 m | 32,500 |
| SH 41 | Idaho | Good | 2024 | 48.2 m | 32,500 |
| SH 41 | Idaho | Good | 2023 | 44.7 m | 32,250 |
| SH 41 | Idaho | Good | 2023 | 48.2 m | 32,250 |
| SH 41;SH 41 IC | Idaho | Fair | 1971 | 39.6 m | 32,250 |
| SMA 7076;LINDSAY BLVD.IC | Idaho | Fair | 1966 | 35.7 m | 32,000 |
| IDAHO CANAL | Idaho | Fair | 2004 | 10.7 m | 32,000 |
| UPRR | Idaho | Fair | 1966 | 44.2 m | 32,000 |
| CANYON CREEK | Idaho | Fair | 1956 | 8.1 m | 32,000 |
| SPOKANE RIVER | Idaho | Fair | 1976 | 141.7 m | 32,000 |
| SPOKANE RIVER | Idaho | Fair | 1976 | 141.7 m | 32,000 |
| SNAKE RIVER; PERRINE BR. | Idaho | Fair | 1976 | 457.2 m | 31,500 |
| INDIAN CREEK | Idaho | Good | 1968 | 7.3 m | 31,500 |
| PEDESTRIAN/BIKE PATH | Idaho | Poor | 1971 | 39.6 m | 31,250 |
| HUETTER ROAD GS | Idaho | Fair | 1971 | 34.7 m | 31,250 |
| ATLAS ROAD GS | Idaho | Fair | 1971 | 29.3 m | 31,250 |
| ATLAS ROAD GS | Idaho | Fair | 1971 | 29.3 m | 31,250 |
| PEDESTRIAN/BIKE PATH | Idaho | Fair | 1971 | 39.6 m | 31,250 |
| HUETTER ROAD GS | Idaho | Fair | 1971 | 39.6 m | 31,250 |
| S 8505;PLEASANT VIEW IC | Idaho | Fair | 1976 | 49.1 m | 31,000 |
| I 90B;POST FALLS IC | Idaho | Fair | 1977 | 52.1 m | 31,000 |
| I 90B;POST FALLS IC | Idaho | Fair | 1977 | 52.1 m | 31,000 |
| S 8505;PLEASANT VIEW IC | Idaho | Fair | 1976 | 49.1 m | 31,000 |
| I 84;SAND HOLLOW RD GS | Idaho | Fair | 1962 | 69.5 m | 30,500 |
| SAND CREEK | Idaho | Good | 2002 | 13.4 m | 30,000 |
| ROSS FORK CREEK | Idaho | Good | 2023 | 7.9 m | 29,000 |
| SETTLERS CANAL | Idaho | Fair | 2000 | 21.6 m | 29,000 |
| UPRR;NAMPA RR OVERPASS | Idaho | Fair | 1968 | 131.1 m | 29,000 |
| SH 48;RIGBY GS | Idaho | Fair | 1976 | 44.8 m | 28,500 |
| BURGESS CANAL | Idaho | Fair | 1975 | 28.0 m | 28,500 |
| US 20-26;BOISE RV SLOUGH | Idaho | Fair | 1991 | 189.6 m | 28,250 |
| US 20-26;BOISE RV SLOUGH | Idaho | Fair | 1991 | 217.9 m | 28,250 |
| BOISE RIVER;BROADWAY BR | Idaho | Fair | 2016 | 143.9 m | 28,000 |
| NEW YORK CANAL | Idaho | Fair | 1973 | 24.7 m | 28,000 |
| AMERICANA BLVD;15TH ST. | Idaho | Fair | 1992 | 164.6 m | 28,000 |
| I 84 EB-WB;VISTA AVE IC | Idaho | Fair | 2010 | 55.5 m | 28,000 |
| SAND CREEK | Idaho | Poor | 1994 | 13.1 m | 27,500 |
| ANDERSON CANAL | Idaho | Fair | 1970 | 7.3 m | 27,000 |
| WILLOW CREEK | Idaho | Fair | 1970 | 6.7 m | 27,000 |
| INDIAN CREEK | Idaho | Fair | 1951 | 7.9 m | 26,500 |
| UPRR | Idaho | Good | 1969 | 44.7 m | 26,000 |
| UPRR; GOWEN SPUR | Idaho | Good | 2015 | 36.0 m | 26,000 |
| RIDENBAUGH CANAL | Idaho | Fair | 1970 | 13.7 m | 26,000 |
| UPRR; GOWEN SPUR | Idaho | Good | 2015 | 35.4 m | 26,000 |
| UPRR;INDIAN CR;CALDWELL | Idaho | Fair | 1983 | 86.9 m | 26,000 |
| TEN MILE DRAIN | Idaho | Good | 1990 | 6.7 m | 26,000 |
| RIVERSIDE CANAL | Idaho | Good | 2019 | 11.3 m | 26,000 |
| UPRR | Idaho | Good | 1969 | 44.5 m | 26,000 |
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.