I-90 over Raging River
PoorKing County, Washington · 7.5 E JCT SR 900 · Structure no. 0009823A0000000
- Built
- 1975
- 50 years old
- Condition
- Poor
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 369 ft
- 3 main spans
- Daily traffic
- 31,252
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-90 over Raging River is a prestressed concrete continuous stringer/multi-beam or girder carrying I-90 over Raging River in King County, Washington. It was built in 1975, so it is 50 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 31,252 vehicles a day, roughly 7% of them trucks, projected to reach 47,235 by 2039. The structure is 369 ft (112.5 m) long and 71 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 Raging River built?
It was built in 1975, making it 50 years old in 2025.
What condition is I-90 over Raging 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 October 2024.
How much traffic does I-90 over Raging River carry?
About 31,252 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is I-90 over Raging River?
The structure is 369 ft (112.5 m) long with a longest span of 137 ft (41.8 m) and a deck 71 ft wide.
Who owns I-90 over Raging River?
It is owned by the State Highway Agency.