SW Mt Si Blvd over Ribary Creek
FairKing County, Washington · 0.1 MI E of SR-202 · Structure no. 085730000000000
- Built
- 1989
- 36 years old
- Condition
- Fair
- inspected June 2024
- Type
- Frame
- Concrete
- Length
- 22 ft
- 1 main span
- Daily traffic
- 1,900
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
SW Mt Si Blvd over Ribary Creek is a concrete frame carrying SW Mt Si Blvd over Ribary Creek in King County, Washington. It was built in 1989, so it is 36 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 5 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 1,900 vehicles a day, roughly 5% of them trucks, projected to reach 2,300 by 2040. The structure is 22 ft (6.7 m) long and 69 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 SW Mt Si Blvd over Ribary Creek built?
It was built in 1989, making it 36 years old in 2025.
What condition is SW Mt Si Blvd over Ribary 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 June 2024.
How much traffic does SW Mt Si Blvd over Ribary Creek carry?
About 1,900 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is SW Mt Si Blvd over Ribary Creek?
The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 69 ft wide.
Who owns SW Mt Si Blvd over Ribary Creek?
It is owned by the City or Municipal Highway Agency.