3100000 over Silvies River
GoodHarney County, Oregon · 395 S 52.3 M - 6.6M 31 RD · Structure no. 060402000001023
- Built
- 1964
- 61 years old
- Condition
- Good
- inspected September 2024
- Type
- Frame
- Concrete
- Length
- 70 ft
- 3 main spans
- Daily traffic
- 80
- Owner
- Federal
- U.S. Forest Service
About this bridge
3100000 over Silvies River is a concrete frame carrying 3100000 over Silvies River in Harney County, Oregon. It was built in 1964, so it is 61 years old, older than the Oregon average of 49.9 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 80 vehicles a day, projected to reach 120 by 2045. The structure is 70 ft (21.3 m) long and 29 ft wide. If it were closed, the detour would be 620.7 mi (999 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 3100000 over Silvies River built?
It was built in 1964, making it 61 years old in 2025.
What condition is 3100000 over Silvies 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 September 2024.
How much traffic does 3100000 over Silvies River carry?
About 80 vehicles per day (latest count).
How long is 3100000 over Silvies River?
The structure is 70 ft (21.3 m) long with a longest span of 48 ft (14.6 m) and a deck 29 ft wide.
Who owns 3100000 over Silvies River?
It is owned by the U.S. Forest Service.