C140 Best Lane over Silver Creek Slough
FairHarney County, Oregon · 071 MI US HWY 20 · Structure no. 25A03 C140 0707
- Built
- 1992
- 33 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 25 ft
- 1 main span
- Daily traffic
- 48
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
C140 Best Lane over Silver Creek Slough is a wood or timber stringer/multi-beam or girder carrying C140 Best Lane over Silver Creek Slough in Harney County, Oregon. It was built in 1992, so it is 33 years old, younger than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 48 vehicles a day, roughly 20% of them trucks, projected to reach 53 by 2025. The structure is 25 ft (7.6 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
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 C140 Best Lane over Silver Creek Slough built?
It was built in 1992, making it 33 years old in 2025.
What condition is C140 Best Lane over Silver Creek Slough in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.
How much traffic does C140 Best Lane over Silver Creek Slough carry?
About 48 vehicles per day (2020 count), of which roughly 20% are trucks.
How long is C140 Best Lane over Silver Creek Slough?
The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 28 ft wide.
Who owns C140 Best Lane over Silver Creek Slough?
It is owned by the County Highway Agency.