I-90 over E Fk Issaquah Creek
FairKing County, Washington · 2.9 E JCT SR 900 · Structure no. 0009973C0000000
- Built
- 1976
- 49 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 544 ft
- 6 main spans
- Daily traffic
- 34,797
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-90 over E Fk Issaquah Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying I-90 over E Fk Issaquah Creek in King County, Washington. It was built in 1976, so it is 49 years old, younger 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 34,797 vehicles a day, roughly 7% of them trucks, projected to reach 53,020 by 2039. The structure is 544 ft (165.8 m) long and 54 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-90 over E Fk Issaquah Creek built?
It was built in 1976, making it 49 years old in 2025.
What condition is I-90 over E Fk Issaquah Creek 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 October 2024.
How much traffic does I-90 over E Fk Issaquah Creek carry?
About 34,797 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is I-90 over E Fk Issaquah Creek?
The structure is 544 ft (165.8 m) long with a longest span of 92 ft (28 m) and a deck 54 ft wide.
Who owns I-90 over E Fk Issaquah Creek?
It is owned by the State Highway Agency.