SR 508 over I-5
GoodLewis County, Washington · JCT I-5 · Structure no. 0013015A0000000
- Built
- 1986
- 39 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 250 ft
- 2 main spans
- Daily traffic
- 4,290
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 508 over I-5 is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 508 over I-5 in Lewis County, Washington. It was built in 1986, so it is 39 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 4,290 vehicles a day, roughly 12% of them trucks, projected to reach 5,426 by 2039. The structure is 250 ft (76.2 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 508 over I-5 built?
It was built in 1986, making it 39 years old in 2025.
What condition is SR 508 over I-5 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 June 2024.
How much traffic does SR 508 over I-5 carry?
About 4,290 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is SR 508 over I-5?
The structure is 250 ft (76.2 m) long with a longest span of 125 ft (38.1 m) and a deck 43 ft wide.
Who owns SR 508 over I-5?
It is owned by the State Highway Agency.