Bridge conditions in Bonner County, Idaho
104 inventoried bridges · 11 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Bonner County has 11 bridges rated poor out of 104 inventoried, a 10.6% share that puts it well above the national rate of about 7%.
- 11 of the 104 bridges in Bonner County, Idaho, are rated in poor condition (10.6%) in the 2025 National Bridge Inventory, as of .
- 38 bridges (36.5%) are rated good and 55 (52.9%) fair.
- The median Bonner County bridge was built in 1980.
- The busiest poor-rated bridge is US 2 over Priest River (built 1962), carrying about 3,100 vehicles a day.
Good 36.5% · Fair 52.9% · Poor 10.6% of 104 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 2 over Priest River | 1962 | 3,100 | Poor |
| S5786;COLBURN Culv over Grouse Creek | 1941 | 870 | Poor |
| Colburn Culver Rd over Pack River | 1941 | 870 | Poor |
| E Shore Road over Hunt Creek | 1975 | 430 | Poor |
| Rapid Lightning Rd over Rapid Lightning Creek | 1970 | 280 | Poor |
| Fs Route No. 2706 over Granite Creek | 1964 | 50 | Poor |
| Fs Route No. 419 over Morris Creek | 1952 | 50 | Poor |
| Fs Route No. 312 over Upper W. Branch | 1954 | 50 | Poor |
| Fs Route No. 308 over Kalispell Creek | 1955 | 50 | Poor |
| East River Loop over N.fk.east River | 1939 | 30 | Poor |
| Johnson Road over L.w.br.priest R;moore CR | 1980 | 20 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 95 over Pend Oreille R;sandpoint | 1981 | 18,500 | Fair |
| US 2 over Sand Creek | 1973 | 18,500 | Good |
| US 95 over US 95NB Off R;sand Creek | 2012 | 12,500 | Fair |
| US 95 over Bridge Street | 2012 | 12,500 | Fair |
| US 2 over Pend Oreille R;oldtown B | 1988 | 11,500 | Fair |
| US 95 over Cocolalla Creek | 2017 | 11,500 | Good |
| US 95 over Cocolalla Creek | 1950 | 11,500 | Fair |
| US 95 over Bnrr;westmond Bridge | 2004 | 11,500 | Good |
| S7895;SCHWEITZER over Sand Creek | 2017 | 11,500 | Good |
| US 95 over US 95;SH 200 Ic | 2012 | 9,600 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Idaho: Idaho bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.