NE 159th ST over Cottage Lake Creek
FairKing County, Washington · 0.1 MI W of Avondale RD · Structure no. 082342000000000
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected August 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 21 ft
- 1 main span
- Daily traffic
- 1,097
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
NE 159th ST over Cottage Lake Creek is a prestressed concrete slab carrying NE 159th ST over Cottage Lake Creek in King County, Washington. It was built in 1987, so it is 38 years old, younger than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 1,097 vehicles a day, roughly 10% of them trucks, projected to reach 1,600 by 2039. The structure is 21 ft (6.4 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 NE 159th ST over Cottage Lake Creek built?
It was built in 1987, making it 38 years old in 2025.
What condition is NE 159th ST over Cottage Lake Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.
How much traffic does NE 159th ST over Cottage Lake Creek carry?
About 1,097 vehicles per day (2018 count), of which roughly 10% are trucks.
How long is NE 159th ST over Cottage Lake Creek?
The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.2 m) and a deck 40 ft wide.
Who owns NE 159th ST over Cottage Lake Creek?
It is owned by the County Highway Agency.