I-90 over Yakima River
PoorKittitas County, Washington · 16.5 E JCT SR 906 · Structure no. 0005872A0000000
- Built
- 1959
- 66 years old, rebuilt 1975
- Condition
- Poor
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 317 ft
- 4 main spans
- Daily traffic
- 16,667
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-90 over Yakima River is a concrete continuous box beam or girders - multiple carrying I-90 over Yakima River in Kittitas County, Washington. It was built in 1959 and reconstructed in 1975, so it is 66 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 16,667 vehicles a day, roughly 23% of them trucks, projected to reach 21,569 by 2039. The structure is 317 ft (96.6 m) long and 41 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-90 over Yakima River built?
It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1975.
What condition is I-90 over Yakima River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.
How much traffic does I-90 over Yakima River carry?
About 16,667 vehicles per day (2023 count), of which roughly 23% are trucks.
How long is I-90 over Yakima River?
The structure is 317 ft (96.6 m) long with a longest span of 90 ft (27.4 m) and a deck 41 ft wide.
Who owns I-90 over Yakima River?
It is owned by the State Highway Agency.