SR 18 over Raging River
GoodKing County, Washington · 10.6 E JCT SR 169 · Structure no. 0006676A0000000
- Built
- 1962
- 63 years old, rebuilt 1995
- Condition
- Good
- inspected October 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 292 ft
- 5 main spans
- Daily traffic
- 25,373
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 18 over Raging River is a concrete continuous box beam or girders - multiple carrying SR 18 over Raging River in King County, Washington. It was built in 1962 and reconstructed in 1995, so it is 63 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 25,373 vehicles a day, roughly 17% of them trucks, projected to reach 38,039 by 2039. The structure is 292 ft (89 m) long and 41 ft wide. If it were closed, the detour would be 24.9 mi (40 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 18 over Raging River built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1995.
What condition is SR 18 over Raging River 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 October 2023.
How much traffic does SR 18 over Raging River carry?
About 25,373 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is SR 18 over Raging River?
The structure is 292 ft (89 m) long with a longest span of 96 ft (29.3 m) and a deck 41 ft wide.
Who owns SR 18 over Raging River?
It is owned by the State Highway Agency.