Mccormack Rdg Rd over Mission Creek
Lewis County, Idaho · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mccormack Rdg Rd over Mission Creek in Lewis County, Idaho, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2013, making it 12 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2023).
- It is one of 12 of the 21 inventoried bridges in Lewis County rated good (57.1%); 1 (4.8%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (46.18889, -116.64794)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 50 ft |
| Location | 3.5 S. 1.0 W. Winchester |
| NBI structure number | 000000000029798 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Idaho department of transportation.
Busiest bridges in Lewis 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 |
All bridges nearby: Lewis County, ID bridge conditions · every bridge in Lewis County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.