N-W Ramp over I-5
GoodKing County, Washington · JCT I-90 · Structure no. 0007565A0000000
- Built
- 1966
- 59 years old, rebuilt 1991
- Condition
- Good
- inspected August 2024
- Type
- Box Beam or Girders - Single or Spread
- Concrete Continuous
- Length
- 1,282 ft
- 9 main spans
- Daily traffic
- 2,190
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
N-W Ramp over I-5 is a concrete continuous box beam or girders - single or spread carrying N-W Ramp over I-5 in King County, Washington. It was built in 1966 and reconstructed in 1991, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 2,190 vehicles a day, roughly 5% of them trucks, projected to reach 3,662 by 2036. The structure is 1,282 ft (390.8 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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-W Ramp over I-5 built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1991.
What condition is N-W Ramp over I-5 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.
How much traffic does N-W Ramp over I-5 carry?
About 2,190 vehicles per day (2012 count), of which roughly 5% are trucks.
How long is N-W Ramp over I-5?
The structure is 1,282 ft (390.8 m) long with a longest span of 140 ft (42.7 m) and a deck 27 ft wide.
Who owns N-W Ramp over I-5?
It is owned by the State Highway Agency.