State Route 24 over Oak Hill Road
FairContra Costa County, California · 04-CC-024-R6.26-LFYT · Structure no. 28 0133R
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 185 ft
- 3 main spans
- Daily traffic
- 79,500
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 24 over Oak Hill Road is a concrete continuous box beam or girders - multiple carrying State Route 24 over Oak Hill Road in Contra Costa County, California. It was built in 1971, so it is 54 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 79,500 vehicles a day, roughly 3% of them trucks, projected to reach 118,967 by 2045. The structure is 185 ft (56.4 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
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 24 over Oak Hill Road built?
It was built in 1971, making it 54 years old in 2025.
What condition is State Route 24 over Oak Hill Road in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.
How much traffic does State Route 24 over Oak Hill Road carry?
About 79,500 vehicles per day (2019 count), of which roughly 3% are trucks.
How long is State Route 24 over Oak Hill Road?
The structure is 185 ft (56.4 m) long with a longest span of 103 ft (31.3 m) and a deck 68 ft wide.
Who owns State Route 24 over Oak Hill Road?
It is owned by the State Highway Agency.