284th Ave NE over Sikes Lake
PoorKing County, Washington · 0.6 MI S of SR-203 · Structure no. 080469000000000
- Built
- 1978
- 47 years old
- Condition
- Poor
- inspected July 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 260 ft
- 13 main spans
- Daily traffic
- 225
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
284th Ave NE over Sikes Lake is a prestressed concrete slab carrying 284th Ave NE over Sikes Lake in King County, Washington. It was built in 1978, so it is 47 years old, younger 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. Its operating status is: open, would be posted or closed except for temporary shoring.
It carries about 225 vehicles a day, roughly 5% of them trucks, projected to reach 440 by 2039. The structure is 260 ft (79.2 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 284th Ave NE over Sikes Lake built?
It was built in 1978, making it 47 years old in 2025.
What condition is 284th Ave NE over Sikes Lake 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 July 2024.
How much traffic does 284th Ave NE over Sikes Lake carry?
About 225 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is 284th Ave NE over Sikes Lake?
The structure is 260 ft (79.2 m) long with a longest span of 20 ft (6.1 m) and a deck 24 ft wide.
Who owns 284th Ave NE over Sikes Lake?
It is owned by the County Highway Agency.