Bridge conditions in Nez Perce County, Idaho
72 inventoried bridges · 3 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 72 bridges in Nez Perce County: 20 rated good, 49 fair, and 3 poor.
- 3 of the 72 bridges in Nez Perce County, Idaho, are rated in poor condition (4.2%) in the 2025 National Bridge Inventory, as of .
- 20 bridges (27.8%) are rated good and 49 (68.1%) fair.
- The median Nez Perce County bridge was built in 1980.
- The busiest poor-rated bridge is Lenore Grade Road over Clearwater R;lenore Br. (built 1935), carrying about 400 vehicles a day.
Good 27.8% · Fair 68.1% · Poor 4.2% of 72 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 |
|---|---|---|---|
| Lenore Grade Road over Clearwater R;lenore Br. | 1935 | 400 | Poor |
| Mcintyre Street over Lapwai Creek | 1935 | 180 | Poor |
| Highline Arrow Rd over Potlatch R(arrow Jct Br) | 1920 | 90 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SMA7344;BRYDEN Cyn over Snake R;high/southway Br | 1982 | 22,000 | Fair |
| US 12 over US 12;SNAKE River | 1939 | 21,000 | Fair |
| US 12 over Clearwater River;bnrr | 1951 | 21,000 | Fair |
| US 95 over Hatwai Creek | 1979 | 13,000 | Fair |
| US 95 over US 12;US 12-95 Ic | 1964 | 11,000 | Fair |
| US 12 over Aprroach Rd;catholic CR. | 1968 | 8,400 | Good |
| US 95 over Lapwai Creek | 1964 | 7,000 | Fair |
| US 95 over Lapwai Creek | 1964 | 7,000 | Fair |
| US 95 over US 95 Ramp;washington Ic | 1980 | 7,000 | Fair |
| US 95 over Nprr;clearwater River | 1962 | 6,400 | Fair |
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.