I-90 over High Point RD
FairKing County, Washington · 4.4 E JCT SR 900 · Structure no. 0009733A0000000
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 140 ft
- 1 main span
- Daily traffic
- 33,894
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-90 over High Point RD is a prestressed concrete stringer/multi-beam or girder carrying I-90 over High Point RD in King County, Washington. It was built in 1975, so it is 50 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 33,894 vehicles a day, roughly 7% of them trucks, projected to reach 51,569 by 2039. The structure is 140 ft (42.7 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 | 8 Very Good | No problems noted. |
| 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-90 over High Point RD built?
It was built in 1975, making it 50 years old in 2025.
What condition is I-90 over High Point RD 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-90 over High Point RD carry?
About 33,894 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is I-90 over High Point RD?
The structure is 140 ft (42.7 m) long with a longest span of 135 ft (41.1 m) and a deck 71 ft wide.
Who owns I-90 over High Point RD?
It is owned by the State Highway Agency.