SR 522 over Swamp Creek
GoodKing County, Washington · 2.1 E JCT SR 104 · Structure no. 002003960000000
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected September 2022
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 86 ft
- 1 main span
- Daily traffic
- 35,060
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 522 over Swamp Creek is a prestressed concrete stringer/multi-beam or girder carrying SR 522 over Swamp Creek in King County, Washington. It was built in 2008, so it is 17 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 35,060 vehicles a day, roughly 3% of them trucks, projected to reach 56,265 by 2039. The structure is 86 ft (26.2 m) long and 93 ft wide. If it were closed, the detour would be 5 mi (8 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 522 over Swamp Creek built?
It was built in 2008, making it 17 years old in 2025.
What condition is SR 522 over Swamp 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 September 2022.
How much traffic does SR 522 over Swamp Creek carry?
About 35,060 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is SR 522 over Swamp Creek?
The structure is 86 ft (26.2 m) long with a longest span of 86 ft (26.2 m) and a deck 93 ft wide.
Who owns SR 522 over Swamp Creek?
It is owned by the State Highway Agency.