I-90 over Richards RD
FairPosted for loadKing County, Washington · 0.2 E JCT I-405 · Structure no. 0002577A0000000
- Built
- 1940
- 85 years old, rebuilt 1968
- Condition
- Fair
- inspected May 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 200 ft
- 5 main spans
- Daily traffic
- 69,741
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-90 over Richards RD is a concrete continuous tee beam carrying I-90 over Richards RD in King County, Washington. It was built in 1940 and reconstructed in 1968, so it is 85 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. Its operating status is: posted for load restriction.
It carries about 69,741 vehicles a day, roughly 3% of them trucks, projected to reach 107,036 by 2039. The structure is 200 ft (61 m) long and 72 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-90 over Richards RD built?
It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1968.
What condition is I-90 over Richards 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 May 2023.
How much traffic does I-90 over Richards RD carry?
About 69,741 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is I-90 over Richards RD?
The structure is 200 ft (61 m) long with a longest span of 60 ft (18.3 m) and a deck 72 ft wide.
Who owns I-90 over Richards RD?
It is owned by the State Highway Agency.