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 |
|---|---|---|---|---|---|
| PORTER CANAL | Idaho | Fair | 1987 | 7.3 m | 18,000 |
| I 84;NW CALDWELL IC | Idaho | Fair | 1983 | 69.2 m | 18,000 |
| I 90 EB-WB;SELTICE IC | Idaho | Fair | 1977 | 120.4 m | 18,000 |
| BOISE RIVER | Idaho | Good | 2014 | 526.1 m | 18,000 |
| PHYLLIS CANAL | Idaho | Good | 2014 | 13.7 m | 18,000 |
| IDAHO CANAL | Idaho | Fair | 1980 | 18.3 m | 18,000 |
| MEPPEN CANAL | Idaho | Fair | 1980 | 7.0 m | 18,000 |
| SNAKE RIVER;W.BLACKFOOT | Idaho | Fair | 1965 | 142.3 m | 18,000 |
| STC 6706; HITT RD IC | Idaho | Good | 2005 | 35.4 m | 17,750 |
| COUNTY LINE ROAD IC | Idaho | Good | 2001 | 38.4 m | 17,750 |
| COUNTY LINE ROAD IC | Idaho | Good | 2001 | 38.4 m | 17,750 |
| RIRIE OUTLET CHANNEL | Idaho | Fair | 1974 | 17.7 m | 17,750 |
| STC 6706; HITT RD IC | Idaho | Good | 2005 | 35.4 m | 17,750 |
| SH43;EIRR;W BELT BRDG IC | Idaho | Fair | 1972 | 71.3 m | 17,750 |
| RIRIE OUTLET CHANNEL | Idaho | Fair | 1974 | 17.7 m | 17,750 |
| SH43;EIRR;W BELT BRDG IC | Idaho | Fair | 1986 | 71.6 m | 17,750 |
| I 90 EB-WB;4TH ST.IC | Idaho | Fair | 1985 | 62.5 m | 17,500 |
| RIDENBAUGH CANAL | Idaho | Fair | 1979 | 7.9 m | 17,500 |
| S.FK.TETON RIVER | Idaho | Fair | 1971 | 43.9 m | 17,000 |
| RIDENBAUGH CANAL | Idaho | Fair | 1979 | 11.0 m | 17,000 |
| SNAKE RIVER;HEYBURN BR. | Idaho | Fair | 1977 | 400.2 m | 17,000 |
| NORTH SLOUGH | Idaho | Good | 2014 | 7.3 m | 16,500 |
| BOISE RIVER | Idaho | Fair | 1931 | 92.4 m | 16,500 |
| NEW YORK CANAL | Idaho | Fair | 1989 | 38.1 m | 16,000 |
| SOLOMAN DRAIN | Idaho | Good | 2023 | 6.2 m | 16,000 |
| HIGH LINE CANAL | Idaho | Good | 1947 | 6.7 m | 16,000 |
| FARMERS UNION CANAL | Idaho | Good | 1997 | 8.8 m | 16,000 |
| STP 7726;S.REXBURG IC | Idaho | Good | 1981 | 47.9 m | 15,750 |
| STP 7726;S.REXBURG IC | Idaho | Good | 1981 | 47.9 m | 15,750 |
| BOISE RIVER | Idaho | Fair | 1987 | 94.8 m | 15,500 |
| PURPLE SAGE GS | Idaho | Fair | 1962 | 32.9 m | 15,500 |
| PERRINE COULEE CANAL | Idaho | Fair | 1960 | 7.6 m | 15,500 |
| I 90B;NW BLVD;US 95 IC | Idaho | Fair | 1968 | 25.9 m | 15,500 |
| D LINE CANAL | Idaho | Good | 1961 | 8.5 m | 15,500 |
| FIFTEEN MILE CREEK | Idaho | Fair | 1947 | 7.6 m | 15,500 |
| INDIAN CREEK | Idaho | Good | 2020 | 13.4 m | 15,500 |
| SE 9TH AVENUE GS | Idaho | Good | 1961 | 7.3 m | 15,500 |
| PURPLE SAGE GS | Idaho | Fair | 1962 | 32.9 m | 15,500 |
| SAND HOLLOW CREEK | Idaho | Fair | 1962 | 7.8 m | 15,500 |
| INDIAN CREEK | Idaho | Fair | 2006 | 97.2 m | 15,500 |
| I 90 EB-WB; GOVT WAY GS | Idaho | Fair | 2006 | 53.3 m | 15,500 |
| SAND HOLLOW CREEK | Idaho | Fair | 1962 | 7.8 m | 15,500 |
| SIDEHILL CANAL | Idaho | Good | 2007 | 19.5 m | 15,500 |
| D LINE CANAL | Idaho | Fair | 1961 | 8.5 m | 15,500 |
| SPOKANE R;PED/BIKE PATH | Idaho | Fair | 1968 | 310.3 m | 15,500 |
| BLACKWELL SLOUGH | Idaho | Fair | 1969 | 37.2 m | 15,500 |
| INDIAN CREEK | Idaho | Good | 2009 | 15.5 m | 15,500 |
| SNAKE RIVER | Idaho | Good | 2006 | 224.6 m | 15,500 |
| SE 9TH AVENUE GS | Idaho | Good | 1961 | 7.3 m | 15,500 |
| INDIAN CREEK | Idaho | Fair | 1953 | 7.9 m | 15,250 |
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.