SR 410 over Slippery Creek
GoodKing County, Washington · 17.6 E JCT SR 164 · Structure no. 0008136A0000000
- Built
- 1967
- 58 years old
- Condition
- Good
- inspected May 2024
- Type
- Slab
- Concrete Continuous
- Length
- 78 ft
- 3 main spans
- Daily traffic
- 1,907
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 410 over Slippery Creek is a concrete continuous slab carrying SR 410 over Slippery Creek in King County, Washington. It was built in 1967, so it is 58 years old, older 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 1,907 vehicles a day, roughly 5% of them trucks, projected to reach 2,839 by 2039. The structure is 78 ft (23.8 m) long and 41 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 410 over Slippery Creek built?
It was built in 1967, making it 58 years old in 2025.
What condition is SR 410 over Slippery Creek 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 May 2024.
How much traffic does SR 410 over Slippery Creek carry?
About 1,907 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is SR 410 over Slippery Creek?
The structure is 78 ft (23.8 m) long with a longest span of 30 ft (9.1 m) and a deck 41 ft wide.
Who owns SR 410 over Slippery Creek?
It is owned by the State Highway Agency.