C138 Silver CR RD over Silver Creek Slough
GoodHarney County, Oregon · 009 US HWY 20 · Structure no. 20454 C13800094
- Built
- 2006
- 19 years old
- Condition
- Good
- inspected September 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 36 ft
- 1 main span
- Daily traffic
- 127
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
C138 Silver CR RD over Silver Creek Slough is a prestressed concrete slab carrying C138 Silver CR RD over Silver Creek Slough in Harney County, Oregon. It was built in 2006, so it is 19 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 127 vehicles a day, roughly 10% of them trucks, projected to reach 147 by 2025. The structure is 36 ft (11 m) long and 28 ft wide. If it were closed, the detour would be 21.7 mi (35 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 C138 Silver CR RD over Silver Creek Slough built?
It was built in 2006, making it 19 years old in 2025.
What condition is C138 Silver CR RD over Silver Creek Slough 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 C138 Silver CR RD over Silver Creek Slough carry?
About 127 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is C138 Silver CR RD over Silver Creek Slough?
The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 28 ft wide.
Who owns C138 Silver CR RD over Silver Creek Slough?
It is owned by the County Highway Agency.