SE 66th ST over North Fork Issaquah Crk
FairKing County, Washington · 0.2 MI N of I-90 · Structure no. 083580000000000
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected October 2024
- Type
- Slab
- Concrete
- Length
- 25 ft
- 1 main span
- Daily traffic
- 2,350
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
SE 66th ST over North Fork Issaquah Crk is a concrete slab carrying SE 66th ST over North Fork Issaquah Crk in King County, Washington. It was built in 1973, so it is 52 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 5 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 2,350 vehicles a day, roughly 5% of them trucks, projected to reach 4,300 by 2040. The structure is 25 ft (7.6 m) long and 36 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SE 66th ST over North Fork Issaquah Crk built?
It was built in 1973, making it 52 years old in 2025.
What condition is SE 66th ST over North Fork Issaquah Crk 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 SE 66th ST over North Fork Issaquah Crk carry?
About 2,350 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is SE 66th ST over North Fork Issaquah Crk?
The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 36 ft wide.
Who owns SE 66th ST over North Fork Issaquah Crk?
It is owned by the City or Municipal Highway Agency.