I-5 over Kelso Ave (old SR 431)
GoodCowlitz County, Washington · 0.9 N JCT SR 4 · Structure no. 0010495A0000000
- Built
- 1979
- 46 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 125 ft
- 1 main span
- Daily traffic
- 27,119
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-5 over Kelso Ave (old SR 431) is a prestressed concrete stringer/multi-beam or girder carrying I-5 over Kelso Ave (old SR 431) in Cowlitz County, Washington. It was built in 1979, so it is 46 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 27,119 vehicles a day, roughly 21% of them trucks, projected to reach 36,053 by 2039. The structure is 125 ft (38.1 m) long and 55 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-5 over Kelso Ave (old SR 431) built?
It was built in 1979, making it 46 years old in 2025.
What condition is I-5 over Kelso Ave (old SR 431) 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 April 2024.
How much traffic does I-5 over Kelso Ave (old SR 431) carry?
About 27,119 vehicles per day (2023 count), of which roughly 21% are trucks.
How long is I-5 over Kelso Ave (old SR 431)?
The structure is 125 ft (38.1 m) long with a longest span of 120 ft (36.6 m) and a deck 55 ft wide.
Who owns I-5 over Kelso Ave (old SR 431)?
It is owned by the State Highway Agency.