County Road 99W over Zamora Ditch
GoodYolo County, California · 0.35 MI NW of CR #12 · Structure no. 22C0066
- Built
- 1920
- 105 years old, rebuilt 1950
- Condition
- Good
- inspected January 2025
- Type
- Slab
- Concrete Continuous
- Length
- 26 ft
- 3 main spans
- Daily traffic
- 1,724
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
County Road 99W over Zamora Ditch is a concrete continuous slab carrying County Road 99W over Zamora Ditch in Yolo County, California. It was built in 1920 and reconstructed in 1950, so it is 105 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 1,724 vehicles a day, roughly 35% of them trucks, projected to reach 2,077 by 2047. The structure is 26 ft (8 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County Road 99W over Zamora Ditch built?
It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1950.
What condition is County Road 99W over Zamora Ditch 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 January 2025.
How much traffic does County Road 99W over Zamora Ditch carry?
About 1,724 vehicles per day (2015 count), of which roughly 35% are trucks.
How long is County Road 99W over Zamora Ditch?
The structure is 26 ft (8 m) long with a longest span of 9 ft (2.7 m) and a deck 28 ft wide.
Who owns County Road 99W over Zamora Ditch?
It is owned by the County Highway Agency.