Walnut Road over Kopta Slough
GoodTehama County, California · 0.3 MI N Orangewood RD · Structure no. 08C0007
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected November 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 27 ft
- 1 main span
- Daily traffic
- 200
- 2010 count
- Owner
- County
- County Highway Agency
About this bridge
Walnut Road over Kopta Slough is a steel girder and floorbeam system carrying Walnut Road over Kopta Slough in Tehama County, California. It was built in 1966, so it is 59 years old, older 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 200 vehicles a day, roughly 6% of them trucks, projected to reach 307 by 2042. The structure is 27 ft (8.2 m) long and 19 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Walnut Road over Kopta Slough built?
It was built in 1966, making it 59 years old in 2025.
What condition is Walnut Road over Kopta 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 November 2024.
How much traffic does Walnut Road over Kopta Slough carry?
About 200 vehicles per day (2010 count), of which roughly 6% are trucks.
How long is Walnut Road over Kopta Slough?
The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 19 ft wide.
Who owns Walnut Road over Kopta Slough?
It is owned by the County Highway Agency.