WB SR 18 to 304th over Soosette Creek
GoodKing County, Washington · 4.7 E JCT SR 164 · Structure no. 0014776D0000000
- Built
- 1997
- 28 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 390 ft
- 3 main spans
- Daily traffic
- 3,899
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
WB SR 18 to 304th over Soosette Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying WB SR 18 to 304th over Soosette Creek in King County, Washington. It was built in 1997, so it is 28 years old, younger 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 3,899 vehicles a day, roughly 1% of them trucks, projected to reach 6,119 by 2039. The structure is 390 ft (118.9 m) long and 28 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was WB SR 18 to 304th over Soosette Creek built?
It was built in 1997, making it 28 years old in 2025.
What condition is WB SR 18 to 304th over Soosette Creek 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 WB SR 18 to 304th over Soosette Creek carry?
About 3,899 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is WB SR 18 to 304th over Soosette Creek?
The structure is 390 ft (118.9 m) long with a longest span of 126 ft (38.3 m) and a deck 28 ft wide.
Who owns WB SR 18 to 304th over Soosette Creek?
It is owned by the State Highway Agency.