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 |
|---|---|---|---|---|---|
| STC 1762;PORTNEUF RD IC | Idaho | Fair | 1963 | 50.3 m | 9,750 |
| I 86 EB RAMP | Idaho | Good | 2023 | 126.2 m | 9,750 |
| I 86 EB-WB; CHUBBUCK IC | Idaho | Good | 2013 | 52.4 m | 9,750 |
| SNAKE RIVER DRY BED CNL | Idaho | Fair | 1975 | 21.9 m | 9,750 |
| SNAKE RIVER DRY BED CNL | Idaho | Fair | 1975 | 21.9 m | 9,750 |
| MENAN CANAL | Idaho | Fair | 1975 | 13.4 m | 9,750 |
| MENAN CANAL | Idaho | Fair | 1975 | 13.4 m | 9,750 |
| MENAN-LORENZO RD IC | Idaho | Good | 2011 | 31.1 m | 9,750 |
| MENAN-LORENZO RD IC | Idaho | Good | 2011 | 31.1 m | 9,750 |
| CANYON CR;GLENNS FERRY | Idaho | Fair | 1976 | 22.6 m | 9,750 |
| SNAKE RIVER | Idaho | Good | 2016 | 306.0 m | 9,750 |
| SNAKE RIVER | Idaho | Fair | 2017 | 306.0 m | 9,750 |
| RD;UPRR;SNAKE R;GLENNS F | Idaho | Fair | 1974 | 333.5 m | 9,750 |
| SNAKE RIVER;KING HILL | Idaho | Fair | 1974 | 304.2 m | 9,750 |
| SNAKE RIVER;KING HILL | Idaho | Fair | 1974 | 304.2 m | 9,750 |
| RD;UPRR;SNAKE R;GLENNS F | Idaho | Fair | 1974 | 342.0 m | 9,750 |
| CANYON CR;GLENNS FERRY | Idaho | Fair | 1976 | 22.6 m | 9,750 |
| I 86 EB-WB; CHUBBUCK IC | Idaho | Good | 2013 | 52.4 m | 9,750 |
| I 90 EB OFF;W.MULLAN IC | Idaho | Fair | 1973 | 41.1 m | 9,600 |
| US 95;SH 200 IC | Idaho | Good | 2012 | 96.9 m | 9,600 |
| PORTNEUF RIVER | Idaho | Fair | 1957 | 27.4 m | 9,600 |
| PORTNEUF RIVER | Idaho | Fair | 1957 | 27.4 m | 9,600 |
| COPPER STREET GS | Idaho | Fair | 1973 | 24.1 m | 9,600 |
| RIDENBAUGH CANAL | Idaho | Good | 2009 | 7.3 m | 9,500 |
| SOUTHSIDE CANAL | Idaho | Fair | 1960 | 64.3 m | 9,500 |
| S.FK.COEUR DALENE RIVER | Idaho | Fair | 1964 | 46.3 m | 9,500 |
| 1250 E GS | Idaho | Fair | 1960 | 32.9 m | 9,500 |
| US 95/SH 54 IC | Idaho | Good | 2014 | 58.5 m | 9,500 |
| RIDENBAUGH CANAL | Idaho | Good | 1992 | 11.3 m | 9,500 |
| S.FK.COEUR DALENE RIVER | Idaho | Fair | 1964 | 46.3 m | 9,500 |
| 1250 E GS | Idaho | Good | 1960 | 32.9 m | 9,500 |
| SOUTHSIDE CANAL | Idaho | Fair | 1960 | 64.3 m | 9,500 |
| US 20;N.RIGBY IC | Idaho | Fair | 1975 | 69.8 m | 9,500 |
| SNAKE RIVER VALLEY CANAL | Idaho | Good | 2018 | 18.9 m | 9,500 |
| US 95/SH 54 IC | Idaho | Good | 2014 | 58.5 m | 9,500 |
| NEW YORK CANAL | Idaho | Fair | 1961 | 18.9 m | 9,300 |
| RR ROADBED/NO TRACKS | Idaho | Fair | 1972 | 78.0 m | 9,300 |
| RIDENBAUGH CANAL | Idaho | Fair | 1991 | 14.6 m | 9,300 |
| BNRR;COLBURN OVERPASS | Idaho | Fair | 1988 | 102.7 m | 9,300 |
| PACK RIVER;N COLBURN BR. | Idaho | Good | 1988 | 46.3 m | 9,300 |
| UPRR;E.BLISS RAILROAD OP | Idaho | Fair | 1975 | 74.7 m | 9,250 |
| FRONTAGE RD;GS NO.3 | Idaho | Fair | 1977 | 41.5 m | 9,250 |
| FRONTAGE RD;GS NO.3 | Idaho | Fair | 1977 | 40.2 m | 9,250 |
| MALAD R.GORGE;N.TUTTLE | Idaho | Fair | 1975 | 60.4 m | 9,250 |
| MALAD R.GORGE;N.TUTTLE | Idaho | Fair | 1975 | 69.5 m | 9,250 |
| UPRR;E.BLISS RAILROAD OP | Idaho | Fair | 1975 | 74.7 m | 9,250 |
| SNAKE RIVER;HANSEN BR. | Idaho | Fair | 1966 | 232.3 m | 9,200 |
| I 15 SB-NB;N. SHELLEY IC | Idaho | Good | 1996 | 74.7 m | 9,200 |
| FARMERS FRIEND CANAL | Idaho | Fair | 1979 | 10.4 m | 9,100 |
| N.BR.FALL RIVER CANAL | Idaho | Good | 1979 | 6.7 m | 9,100 |
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.