SR 410 over Greenwater River
FairKing County, Washington · 17.9 E JCT SR 164 · Structure no. 0001599D0000000
- Built
- 1932
- 93 years old
- Condition
- Fair
- inspected July 2024
- Type
- Tee Beam
- Concrete
- Length
- 93 ft
- 2 main spans
- Daily traffic
- 1,907
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 410 over Greenwater River is a concrete tee beam carrying SR 410 over Greenwater River in King County, Washington. It was built in 1932, so it is 93 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 6 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 1,907 vehicles a day, roughly 5% of them trucks, projected to reach 2,839 by 2039. The structure is 93 ft (28.3 m) long and 34 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 410 over Greenwater River built?
It was built in 1932, making it 93 years old in 2025.
What condition is SR 410 over Greenwater River 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 July 2024.
How much traffic does SR 410 over Greenwater River carry?
About 1,907 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is SR 410 over Greenwater River?
The structure is 93 ft (28.3 m) long with a longest span of 45 ft (13.7 m) and a deck 34 ft wide.
Who owns SR 410 over Greenwater River?
It is owned by the State Highway Agency.