SR 505 over Cowlitz River
GoodLewis County, Washington · 3.8 E JCT I-5 · Structure no. 0014229A0000000
- Built
- 1994
- 31 years old
- Condition
- Good
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 751 ft
- 4 main spans
- Daily traffic
- 3,938
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 505 over Cowlitz River is a steel continuous stringer/multi-beam or girder carrying SR 505 over Cowlitz River in Lewis County, Washington. It was built in 1994, so it is 31 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 3,938 vehicles a day, roughly 10% of them trucks, projected to reach 4,975 by 2039. The structure is 751 ft (228.9 m) long and 41 ft wide. If it were closed, the detour would be 8.7 mi (14 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 505 over Cowlitz River built?
It was built in 1994, making it 31 years old in 2025.
What condition is SR 505 over Cowlitz 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 February 2024.
How much traffic does SR 505 over Cowlitz River carry?
About 3,938 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is SR 505 over Cowlitz River?
The structure is 751 ft (228.9 m) long with a longest span of 187 ft (57 m) and a deck 41 ft wide.
Who owns SR 505 over Cowlitz River?
It is owned by the State Highway Agency.