US 101 over Skidmore Slough
Pacific County, Washington · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 101 over Skidmore Slough 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 7 (good condition) on the 0-9 scale.
- It was built in 1980, making it 45 years old at the 2025 inventory.
- It carries about 8,012 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 condition class and component ratings are unchanged from the 2024 inventory.
- 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 → (46.67103, -123.77744)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 211 ft |
| Location | 26.9 N Jct SR 4 |
| NBI structure number | 0011758A0000000 |
| 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 Chinook R | 1927 | 7,256 | Fair |
| US 101 over Wallicut River | 1979 | 7,256 | Good |
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.