US 101 over Chehalis River
PoorGrays Harbor County, Washington · 0.2 N JCT SR 105 · Structure no. 0004386A0000000
- Built
- 1955
- 70 years old
- Condition
- Poor
- inspected March 2024
- Type
- Movable - Bascule
- Steel
- Length
- 2,638 ft
- 1 main span
- Daily traffic
- 26,216
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 101 over Chehalis River is a steel movable - bascule carrying US 101 over Chehalis River in Grays Harbor County, Washington. It was built in 1955, so it is 70 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 26,216 vehicles a day, roughly 5% of them trucks, projected to reach 31,924 by 2039. The structure is 2,638 ft (804.1 m) long and 67 ft wide. If it were closed, the detour would be 24.9 mi (40 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 101 over Chehalis River built?
It was built in 1955, making it 70 years old in 2025.
What condition is US 101 over Chehalis 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 March 2024.
How much traffic does US 101 over Chehalis River carry?
About 26,216 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is US 101 over Chehalis River?
The structure is 2,638 ft (804.1 m) long with a longest span of 340 ft (103.6 m) and a deck 67 ft wide.
Who owns US 101 over Chehalis River?
It is owned by the State Highway Agency.