SR 507 over Skookumchuck River
GoodLewis County, Washington · 4.5 N JCT I-5 · Structure no. 0010884A0000000
- Built
- 1978
- 47 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 241 ft
- 3 main spans
- Daily traffic
- 3,920
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 507 over Skookumchuck River is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 507 over Skookumchuck River in Lewis County, Washington. It was built in 1978, so it is 47 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 3,920 vehicles a day, roughly 10% of them trucks, projected to reach 5,121 by 2039. The structure is 241 ft (73.5 m) long and 39 ft wide. If it were closed, the detour would be 11.8 mi (19 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 507 over Skookumchuck River built?
It was built in 1978, making it 47 years old in 2025.
What condition is SR 507 over Skookumchuck 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 November 2024.
How much traffic does SR 507 over Skookumchuck River carry?
About 3,920 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is SR 507 over Skookumchuck River?
The structure is 241 ft (73.5 m) long with a longest span of 117 ft (35.7 m) and a deck 39 ft wide.
Who owns SR 507 over Skookumchuck River?
It is owned by the State Highway Agency.