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 |
|---|---|---|---|---|---|
| JUNIPER ROAD IC | Idaho | Fair | 1968 | 36.6 m | 5,500 |
| JUNIPER ROAD GS 5 | Idaho | Fair | 1968 | 11.3 m | 5,500 |
| JUNIPER ROAD IC | Idaho | Fair | 1968 | 36.6 m | 5,500 |
| COUNTY ROAD GS 6 | Idaho | Fair | 1968 | 9.1 m | 5,500 |
| JUNIPER ROAD GS 5 | Idaho | Fair | 1968 | 11.3 m | 5,500 |
| CO.RD.;GS NO.3 | Idaho | Fair | 1968 | 7.3 m | 5,500 |
| DRAIN | Idaho | Fair | 1968 | 9.1 m | 5,500 |
| CO.RD.;GS NO.4 | Idaho | Fair | 1968 | 7.3 m | 5,500 |
| CO.RD.;GS NO.4 | Idaho | Fair | 1968 | 7.3 m | 5,500 |
| CO.RD.;GS NO.3 | Idaho | Fair | 1968 | 7.3 m | 5,500 |
| COUNTY ROAD GS 6 | Idaho | Fair | 1968 | 9.1 m | 5,500 |
| BOISE RIVER | Idaho | Fair | 1976 | 116.4 m | 5,500 |
| BOISE RIVER | Idaho | Fair | 1932 | 115.2 m | 5,500 |
| WI&M RAILROAD | Idaho | Good | 2022 | 29.5 m | 5,500 |
| WALLING CREEK | Idaho | Good | 2018 | 34.6 m | 5,500 |
| LINDSAY CREEK | Idaho | Fair | 1971 | 6.7 m | 5,500 |
| DRAIN | Idaho | Fair | 1968 | 9.1 m | 5,500 |
| DEEP CREEK | Idaho | Good | 2022 | 20.5 m | 5,500 |
| PHYLLIS CANAL | Idaho | Good | 2000 | 7.3 m | 5,400 |
| OLD INDIAN CREEK CHANNEL | Idaho | Poor | 1966 | 11.9 m | 5,400 |
| OLD INDIAN CREEK CHANNEL | Idaho | Fair | 1971 | 18.6 m | 5,400 |
| RIDENBAUGH CANAL | Idaho | Good | 2004 | 12.2 m | 5,400 |
| PHYLLIS CANAL | Idaho | Fair | 1971 | 12.5 m | 5,400 |
| TETON RIVER OVERFLOW | Idaho | Good | 1976 | 15.5 m | 5,400 |
| S.FK.PALOUSE RIVER | Idaho | Good | 2002 | 16.8 m | 5,300 |
| L CANAL | Idaho | Fair | 2004 | 7.9 m | 5,300 |
| PHYLLIS CNL;11TH AVE EXT | Idaho | Fair | 1994 | 7.9 m | 5,300 |
| I 15;N. MCCAMMON IC | Idaho | Good | 2012 | 82.9 m | 5,300 |
| SNAKE RIVER;NYSSA BRIDGE | Idaho | Fair | 1957 | 212.4 m | 5,300 |
| HENRYS FK. SNAKE RIVER | Idaho | Good | 2004 | 139.6 m | 5,300 |
| PEND OREILLE RIVER | Idaho | Fair | 1956 | 331.9 m | 5,300 |
| S.FK.SNAKE R;SWAN VAL.BR | Idaho | Fair | 1981 | 238.7 m | 5,300 |
| RAINY CREEK | Idaho | Fair | 1992 | 19.2 m | 5,300 |
| PORTNEUF RIVER | Idaho | Good | 2000 | 25.9 m | 5,300 |
| GOLCONDA ACCESS ROAD IC | Idaho | Fair | 1963 | 30.5 m | 5,250 |
| GOLCONDA ACCESS ROAD IC | Idaho | Fair | 1963 | 30.5 m | 5,250 |
| AMI TRAIL | Idaho | Good | 2016 | 6.4 m | 5,200 |
| MASON CREEK FEEDER CANAL | Idaho | Fair | 1989 | 14.9 m | 5,200 |
| RIDENBAUGH CANAL | Idaho | Fair | 1993 | 7.9 m | 5,200 |
| NEW YORK CANAL | Idaho | Fair | 1973 | 18.6 m | 5,200 |
| INDIAN CREEK | Idaho | Fair | 1967 | 20.4 m | 5,200 |
| S 2ND;PORTNEUF R;UPRR | Idaho | Good | 2016 | 128.9 m | 5,200 |
| GOLD FORK RIVER | Idaho | Fair | 2016 | 46.6 m | 5,200 |
| WEST FORK SAND CREEK | Idaho | Good | 1973 | 13.4 m | 5,100 |
| IDAHO CANAL | Idaho | Fair | 1950 | 10.7 m | 5,100 |
| FARR LATERAL CANAL | Idaho | Fair | 1992 | 14.6 m | 5,100 |
| BNSF RR; DIAGONAL RD | Idaho | Good | 2021 | 119.8 m | 5,100 |
| SNAKE RIVER;PAYETTE BR. | Idaho | Poor | 1953 | 210.0 m | 5,100 |
| BIG WOOD RIVER | Idaho | Fair | 2013 | 50.9 m | 5,000 |
| RR ROADBED/NO TRACKS | Idaho | Fair | 1975 | 56.4 m | 5,000 |
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.