I-90 over Richards RD
GoodKing County, Washington · 0.2 E JCT I-405 · Structure no. 0008190A0000000
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 214 ft
- 3 main spans
- Daily traffic
- 69,741
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-90 over Richards RD is a prestressed concrete continuous stringer/multi-beam or girder carrying I-90 over Richards RD in King County, Washington. It was built in 1968, so it is 57 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 69,741 vehicles a day, roughly 3% of them trucks, projected to reach 107,036 by 2039. The structure is 214 ft (65.2 m) long and 95 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 1968, making it 57 years old in 2025.
What condition is I-90 over Richards RD in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. 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 214 ft (65.2 m) long with a longest span of 78 ft (23.8 m) and a deck 95 ft wide.
Who owns I-90 over Richards RD?
It is owned by the State Highway Agency.