IRR C123 West Loop over Silvies River
GoodHarney County, Oregon · 010 MI C121 Foley DR · Structure no. 20618 C12300102
- Built
- 2007
- 18 years old
- Condition
- Good
- inspected September 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 68 ft
- 1 main span
- Daily traffic
- 180
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
IRR C123 West Loop over Silvies River is a prestressed concrete slab carrying IRR C123 West Loop over Silvies River in Harney County, Oregon. It was built in 2007, so it is 18 years old, younger 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 180 vehicles a day, roughly 10% of them trucks, projected to reach 210 by 2025. The structure is 68 ft (20.7 m) long and 28 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR C123 West Loop over Silvies River built?
It was built in 2007, making it 18 years old in 2025.
What condition is IRR C123 West Loop 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 IRR C123 West Loop over Silvies River carry?
About 180 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is IRR C123 West Loop over Silvies River?
The structure is 68 ft (20.7 m) long with a longest span of 68 ft (20.7 m) and a deck 28 ft wide.
Who owns IRR C123 West Loop over Silvies River?
It is owned by the County Highway Agency.