I-5 over NE 155th ST
FairKing County, Washington · 0.5 N JCT SR 523 · Structure no. 0007270C0000000
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 147 ft
- 3 main spans
- Daily traffic
- 92,642
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-5 over NE 155th ST is a concrete continuous box beam or girders - multiple carrying I-5 over NE 155th ST 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 92,642 vehicles a day, roughly 5% of them trucks, projected to reach 138,271 by 2039. The structure is 147 ft (44.8 m) long and 71 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-5 over NE 155th ST built?
It was built in 1964, making it 61 years old in 2025.
What condition is I-5 over NE 155th ST 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 June 2023.
How much traffic does I-5 over NE 155th ST carry?
About 92,642 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is I-5 over NE 155th ST?
The structure is 147 ft (44.8 m) long with a longest span of 75 ft (22.9 m) and a deck 71 ft wide.
Who owns I-5 over NE 155th ST?
It is owned by the State Highway Agency.