NE 85th Street over Sammamish River
FairKing County, Washington · 0.5 MI W of JCT SR-202 · Structure no. 085691000000000
- Built
- 1985
- 40 years old
- Condition
- Fair
- inspected April 2023
- Type
- Box Beam or Girders - Single or Spread
- Concrete Continuous
- Length
- 179 ft
- 3 main spans
- Daily traffic
- 12,000
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
NE 85th Street over Sammamish River is a concrete continuous box beam or girders - single or spread carrying NE 85th Street over Sammamish River in King County, Washington. It was built in 1985, so it is 40 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 12,000 vehicles a day, roughly 3% of them trucks, projected to reach 16,500 by 2038. The structure is 179 ft (54.6 m) long and 68 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 | 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NE 85th Street over Sammamish River built?
It was built in 1985, making it 40 years old in 2025.
What condition is NE 85th Street 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 April 2023.
How much traffic does NE 85th Street over Sammamish River carry?
About 12,000 vehicles per day (2019 count), of which roughly 3% are trucks.
How long is NE 85th Street over Sammamish River?
The structure is 179 ft (54.6 m) long with a longest span of 90 ft (27.4 m) and a deck 68 ft wide.
Who owns NE 85th Street over Sammamish River?
It is owned by the City or Municipal Highway Agency.