SR 6 over Willapa River
Pacific County, Washington · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 6 over Willapa River in Pacific County, Washington, 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 2014, making it 11 years old at the 2025 inventory.
- It carries about 2,737 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 68 of the 120 inventoried bridges in Pacific County rated good (56.7%); 9 (7.5%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: substructure 7 to 8.
- Its most recent inspection on record is dated April 2024, on a 24-month routine inspection cycle.
- 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 → (46.61236, -123.6405)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 8 | Very good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 274 ft |
| Location | 7.0 E Jct US 101 |
| NBI structure number | 0018464A0000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.
Busiest bridges in Pacific County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 101 over Columbia R | 1966 | 23,300 | Poor |
| US 101 over Columbia R | 1966 | 22,526 | Fair |
| US 101 over S Fk Willapa River | 1966 | 10,253 | Poor |
| US 101 over N Fk Willapa | 1992 | 8,151 | Fair |
| US 101 over Skidmore Slough | 1980 | 8,012 | Good |
| US 101 over Chinook R | 1927 | 7,256 | Fair |
All bridges nearby: Pacific County, WA bridge conditions · every bridge in Pacific County · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.