N-85th Ramp over I-5
FairKing County, Washington · 0.7 N JCT SR 522 · Structure no. 0007156D0000000
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 416 ft
- 4 main spans
- Daily traffic
- 13,701
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
N-85th Ramp over I-5 is a concrete continuous box beam or girders - multiple carrying N-85th Ramp over I-5 in King County, Washington. It was built in 1964, so it is 61 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 13,701 vehicles a day, roughly 5% of them trucks, projected to reach 21,922 by 2036. The structure is 416 ft (126.8 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N-85th Ramp over I-5 built?
It was built in 1964, making it 61 years old in 2025.
What condition is N-85th Ramp over I-5 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 N-85th Ramp over I-5 carry?
About 13,701 vehicles per day (2012 count), of which roughly 5% are trucks.
How long is N-85th Ramp over I-5?
The structure is 416 ft (126.8 m) long with a longest span of 122 ft (37.2 m) and a deck 35 ft wide.
Who owns N-85th Ramp over I-5?
It is owned by the State Highway Agency.