SR 99 over Detention Vault
GoodKing County, Washington · 0.9 N JCT SR 509 · Structure no. 0017157A0000000
- Built
- 2010
- 15 years old
- Condition
- Good
- inspected August 2023
- Type
- Culvert
- Concrete
- Length
- 267 ft
- 1 main span
- Daily traffic
- 39,625
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 99 over Detention Vault is a concrete culvert carrying SR 99 over Detention Vault in King County, Washington. It was built in 2010, so it is 15 years old, younger than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 39,625 vehicles a day, roughly 3% of them trucks, projected to reach 56,768 by 2039. The structure is 267 ft (81.4 m) long.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 99 over Detention Vault built?
It was built in 2010, making it 15 years old in 2025.
What condition is SR 99 over Detention Vault in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.
How much traffic does SR 99 over Detention Vault carry?
About 39,625 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is SR 99 over Detention Vault?
The structure is 267 ft (81.4 m) long with a longest span of 267 ft (81.4 m).
Who owns SR 99 over Detention Vault?
It is owned by the State Highway Agency.