US 101 over S Fk Willapa River
PoorPacific County, Washington · 29.4 N JCT SR 4 · Structure no. 0007868A0000000
- Built
- 1966
- 59 years old, rebuilt 1971
- Condition
- Poor
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 600 ft
- 6 main spans
- Daily traffic
- 10,253
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 101 over S Fk Willapa River is a prestressed concrete continuous stringer/multi-beam or girder carrying US 101 over S Fk Willapa River in Pacific County, Washington. It was built in 1966 and reconstructed in 1971, so it is 59 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 10,253 vehicles a day, roughly 6% of them trucks, projected to reach 13,000 by 2039. The structure is 600 ft (182.9 m) long and 83 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 101 over S Fk Willapa River built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1971.
What condition is US 101 over S Fk Willapa River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.
How much traffic does US 101 over S Fk Willapa River carry?
About 10,253 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is US 101 over S Fk Willapa River?
The structure is 600 ft (182.9 m) long with a longest span of 100 ft (30.5 m) and a deck 83 ft wide.
Who owns US 101 over S Fk Willapa River?
It is owned by the State Highway Agency.