County Road Z over Campbell Slough
GoodGlenn County, California · 0.96 MI N of S.H. 162 · Structure no. 11C0074
- Built
- 1930
- 95 years old, rebuilt 1960
- Condition
- Good
- inspected August 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 171 ft
- 9 main spans
- Daily traffic
- 586
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
County Road Z over Campbell Slough is a concrete continuous tee beam carrying County Road Z over Campbell Slough in Glenn County, California. It was built in 1930 and reconstructed in 1960, so it is 95 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 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 586 vehicles a day, roughly 10% of them trucks, projected to reach 657 by 2044. The structure is 171 ft (52.1 m) long and 31 ft wide. If it were closed, the detour would be 11.8 mi (19 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 County Road Z over Campbell Slough built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1960.
What condition is County Road Z over Campbell 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 August 2024.
How much traffic does County Road Z over Campbell Slough carry?
About 586 vehicles per day (2011 count), of which roughly 10% are trucks.
How long is County Road Z over Campbell Slough?
The structure is 171 ft (52.1 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.
Who owns County Road Z over Campbell Slough?
It is owned by the County Highway Agency.