State Route 24 over Happy Valley Road
GoodContra Costa County, California · 04-CC-024-R5.97-LFYT · Structure no. 28 0132L
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected June 2021
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 165 ft
- 3 main spans
- Daily traffic
- 79,500
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 24 over Happy Valley Road is a concrete continuous box beam or girders - multiple carrying State Route 24 over Happy Valley Road in Contra Costa County, California. It was built in 1970, so it is 55 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 79,500 vehicles a day, roughly 3% of them trucks, projected to reach 117,394 by 2041. The structure is 165 ft (50.3 m) long and 68 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 24 over Happy Valley Road built?
It was built in 1970, making it 55 years old in 2025.
What condition is State Route 24 over Happy Valley Road 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 June 2021.
How much traffic does State Route 24 over Happy Valley Road carry?
About 79,500 vehicles per day (2019 count), of which roughly 3% are trucks.
How long is State Route 24 over Happy Valley Road?
The structure is 165 ft (50.3 m) long with a longest span of 64 ft (19.5 m) and a deck 68 ft wide.
Who owns State Route 24 over Happy Valley Road?
It is owned by the State Highway Agency.