Road 20N06 over Rock Creek
GoodSierra County, California · No Data Entered · Structure no. 051153000001075
- Built
- 1983
- 42 years old
- Condition
- Good
- inspected September 2024
- Type
- Girder and Floorbeam System
- Wood or Timber
- Length
- 43 ft
- 1 main span
- Daily traffic
- 50
- Owner
- Federal
- U.S. Forest Service
About this bridge
Road 20N06 over Rock Creek is a wood or timber girder and floorbeam system carrying Road 20N06 over Rock Creek in Sierra County, California. It was built in 1983, so it is 42 years old, younger than the California average of 54.8 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 43 ft (13.1 m) long and 16 ft wide. If it were closed, the detour would be 5.6 mi (9 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Road 20N06 over Rock Creek built?
It was built in 1983, making it 42 years old in 2025.
What condition is Road 20N06 over Rock Creek 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 Road 20N06 over Rock Creek carry?
About 50 vehicles per day (latest count).
How long is Road 20N06 over Rock Creek?
The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.5 m) and a deck 16 ft wide.
Who owns Road 20N06 over Rock Creek?
It is owned by the U.S. Forest Service.