15th Ave NE over Cowen Park Ravine
FairPosted for loadKing County, Washington · 15th Ave NE & NE 62nd ST · Structure no. 085117000000000
- Built
- 1936
- 89 years old
- Condition
- Fair
- inspected April 2024
- Type
- Arch - Deck
- Concrete Continuous
- Length
- 358 ft
- 1 main span
- Daily traffic
- 13,000
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
15th Ave NE over Cowen Park Ravine is a concrete continuous arch - deck carrying 15th Ave NE over Cowen Park Ravine in King 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.
It carries about 13,000 vehicles a day, roughly 5% of them trucks, projected to reach 16,800 by 2039. The structure is 358 ft (109.1 m) long and 55 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 15th Ave NE over Cowen Park Ravine built?
It was built in 1936, making it 89 years old in 2025.
What condition is 15th Ave NE over Cowen Park Ravine 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 April 2024.
How much traffic does 15th Ave NE over Cowen Park Ravine carry?
About 13,000 vehicles per day (2022 count), of which roughly 5% are trucks.
How long is 15th Ave NE over Cowen Park Ravine?
The structure is 358 ft (109.1 m) long with a longest span of 160 ft (48.8 m) and a deck 55 ft wide.
Who owns 15th Ave NE over Cowen Park Ravine?
It is owned by the City or Municipal Highway Agency.