Grade Street over Coweeman River
GoodCowlitz County, Washington · 0.3 W. of I-5 · Structure no. 085599000000000
- Built
- 1990
- 35 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 215 ft
- 3 main spans
- Daily traffic
- 2,675
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Grade Street over Coweeman River is a prestressed concrete continuous stringer/multi-beam or girder carrying Grade Street over Coweeman River in Cowlitz County, Washington. It was built in 1990, so it is 35 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 2,675 vehicles a day, roughly 10% of them trucks, projected to reach 3,610 by 2039. The structure is 215 ft (65.5 m) long and 44 ft wide. If it were closed, the detour would be 6.2 mi (10 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 Grade Street over Coweeman River built?
It was built in 1990, making it 35 years old in 2025.
What condition is Grade Street over Coweeman 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 Grade Street over Coweeman River carry?
About 2,675 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is Grade Street over Coweeman River?
The structure is 215 ft (65.5 m) long with a longest span of 85 ft (25.9 m) and a deck 44 ft wide.
Who owns Grade Street over Coweeman River?
It is owned by the City or Municipal Highway Agency.