NE 90th ST over Sammamish River
FairKing County, Washington · 0.5 MI W of SR-202 · Structure no. 087126000000000
- Built
- 2001
- 24 years old
- Condition
- Fair
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 220 ft
- 3 main spans
- Daily traffic
- 17,500
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
NE 90th ST over Sammamish River is a concrete continuous box beam or girders - multiple carrying NE 90th ST over Sammamish River in King County, Washington. It was built in 2001, so it is 24 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 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 17,500 vehicles a day, roughly 5% of them trucks, projected to reach 24,100 by 2043. The structure is 220 ft (67.1 m) long and 77 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NE 90th ST over Sammamish River built?
It was built in 2001, making it 24 years old in 2025.
What condition is NE 90th ST over Sammamish 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 May 2023.
How much traffic does NE 90th ST over Sammamish River carry?
About 17,500 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is NE 90th ST over Sammamish River?
The structure is 220 ft (67.1 m) long with a longest span of 100 ft (30.5 m) and a deck 77 ft wide.
Who owns NE 90th ST over Sammamish River?
It is owned by the City or Municipal Highway Agency.