I-5 over NE 175th ST
GoodKing County, Washington · 1.6 N JCT SR 523 · Structure no. 0007299B0000000
- Built
- 1964
- 61 years old, rebuilt 1983
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 163 ft
- 3 main spans
- Daily traffic
- 82,639
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-5 over NE 175th ST is a concrete continuous box beam or girders - multiple carrying I-5 over NE 175th ST in King County, Washington. It was built in 1964 and reconstructed in 1983, 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 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 82,639 vehicles a day, roughly 5% of them trucks, projected to reach 123,342 by 2039. The structure is 163 ft (49.7 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 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 I-5 over NE 175th ST built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1983.
What condition is I-5 over NE 175th ST 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 June 2023.
How much traffic does I-5 over NE 175th ST carry?
About 82,639 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is I-5 over NE 175th ST?
The structure is 163 ft (49.7 m) long with a longest span of 80 ft (24.5 m) and a deck 65 ft wide.
Who owns I-5 over NE 175th ST?
It is owned by the State Highway Agency.