Bridge conditions in Lewis County, Idaho
21 inventoried bridges · 1 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Lewis County tracks close to typical: 1 of its 21 inventoried bridges (4.8%) are rated poor, against a national rate of about 7%.
- 1 of the 21 bridges in Lewis County, Idaho, are rated in poor condition (4.8%) in the 2025 National Bridge Inventory, as of .
- 12 bridges (57.1%) are rated good and 8 (38.1%) fair.
- The median Lewis County bridge was built in 2002.
- The busiest poor-rated bridge is Access Rd; Park Rd over Lawyers Creek;park Br (built 1917), carrying about 50 vehicles a day.
Good 57.1% · Fair 38.1% · Poor 4.8% of 21 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 |
|---|---|---|---|
| Access Rd; Park Rd over Lawyers Creek;park Br | 1917 | 50 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 12 over Clearwater R.(kamiah Br) | 1998 | 4,700 | Fair |
| US 95 over Lapwai Creek | 2019 | 3,600 | Good |
| US 95 over Lapwai Creek | 2019 | 3,600 | Good |
| US 95 over Lapwai Creek | 2019 | 3,600 | Good |
| US 95 over Lapwai Creek | 2019 | 3,600 | Good |
| US 95 over Lapwai Creek | 2019 | 3,600 | Good |
| US 95 over Lapwai Creek | 2020 | 3,600 | Good |
| US 95 over Lapwai Creek | 2020 | 3,600 | Good |
| US 95 over Lapwai Creek | 2020 | 3,600 | Good |
| US 95 over Lapwai Creek | 2020 | 3,600 | 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.