I-5 over N-W Ramp
FairKing County, Washington · 3.9 N JCT SR 900 · Structure no. 0007734A0000000
- Built
- 1966
- 59 years old, rebuilt 1995
- Condition
- Fair
- inspected August 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 469 ft
- 6 main spans
- Daily traffic
- 96,847
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-5 over N-W Ramp is a concrete continuous box beam or girders - multiple carrying I-5 over N-W Ramp in King County, Washington. It was built in 1966 and reconstructed in 1995, so it is 59 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 96,847 vehicles a day, roughly 7% of them trucks, projected to reach 144,629 by 2039. The structure is 469 ft (143 m) long and 85 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-5 over N-W Ramp built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1995.
What condition is I-5 over N-W Ramp 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 August 2024.
How much traffic does I-5 over N-W Ramp carry?
About 96,847 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is I-5 over N-W Ramp?
The structure is 469 ft (143 m) long with a longest span of 107 ft (32.6 m) and a deck 85 ft wide.
Who owns I-5 over N-W Ramp?
It is owned by the State Highway Agency.