US 101 over Big Quilcene River
PoorJefferson County, Washington · 11.5 S JCT SR 104 · Structure no. 0002060A0000000
- Built
- 1936
- 89 years old
- Condition
- Poor
- inspected October 2024
- Type
- Truss - Thru
- Steel
- Length
- 244 ft
- 1 main span
- Daily traffic
- 3,525
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 101 over Big Quilcene River is a steel truss - thru carrying US 101 over Big Quilcene River in Jefferson County, Washington. It was built in 1936, so it is 89 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 3,525 vehicles a day, roughly 15% of them trucks, projected to reach 4,474 by 2039. The structure is 244 ft (74.4 m) long and 30 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 101 over Big Quilcene River built?
It was built in 1936, making it 89 years old in 2025.
What condition is US 101 over Big Quilcene 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 October 2024.
How much traffic does US 101 over Big Quilcene River carry?
About 3,525 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is US 101 over Big Quilcene River?
The structure is 244 ft (74.4 m) long with a longest span of 150 ft (45.7 m) and a deck 30 ft wide.
Who owns US 101 over Big Quilcene River?
It is owned by the State Highway Agency.