County Road 89 over Union School Slough
GoodYolo County, California · 0.01 MI N/O C.R. #28 · Structure no. 22C0030
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected November 2021
- Type
- Slab
- Concrete
- Length
- 36 ft
- 1 main span
- Daily traffic
- 1,790
- 2009 count
- Owner
- County
- County Highway Agency
About this bridge
County Road 89 over Union School Slough is a concrete slab carrying County Road 89 over Union School Slough in Yolo County, California. It was built in 1999, so it is 26 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 1,790 vehicles a day, roughly 10% of them trucks, projected to reach 3,218 by 2043. The structure is 36 ft (11.1 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County Road 89 over Union School Slough built?
It was built in 1999, making it 26 years old in 2025.
What condition is County Road 89 over Union School 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 2021.
How much traffic does County Road 89 over Union School Slough carry?
About 1,790 vehicles per day (2009 count), of which roughly 10% are trucks.
How long is County Road 89 over Union School Slough?
The structure is 36 ft (11.1 m) long with a longest span of 31 ft (9.6 m) and a deck 37 ft wide.
Who owns County Road 89 over Union School Slough?
It is owned by the County Highway Agency.