SR 21 over Marlin Hollow Relief
GoodLincoln County, Washington · 11.9 N JCT SR 28 · Structure no. 002003510000000
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected April 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 255
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 21 over Marlin Hollow Relief is a concrete continuous culvert carrying SR 21 over Marlin Hollow Relief in Lincoln County, Washington. It was built in 1970, so it is 55 years old, older 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 255 vehicles a day, roughly 18% of them trucks, projected to reach 280 by 2039. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 8.1 mi (13 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 21 over Marlin Hollow Relief built?
It was built in 1970, making it 55 years old in 2025.
What condition is SR 21 over Marlin Hollow Relief 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 SR 21 over Marlin Hollow Relief carry?
About 255 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is SR 21 over Marlin Hollow Relief?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns SR 21 over Marlin Hollow Relief?
It is owned by the State Highway Agency.