State Route 24 over El Nido Ranch RD
PoorContra Costa County, California · 04-CC-024-R4.90-LFYT · Structure no. 28 0137R
- Built
- 1957
- 68 years old, rebuilt 1971
- Condition
- Poor
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 580 ft
- 7 main spans
- Daily traffic
- 79,500
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 24 over El Nido Ranch RD is a concrete continuous box beam or girders - multiple carrying State Route 24 over El Nido Ranch RD in Contra Costa County, California. It was built in 1957 and reconstructed in 1971, so it is 68 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 79,500 vehicles a day, roughly 3% of them trucks, projected to reach 118,967 by 2045. The structure is 580 ft (176.8 m) long and 70 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 El Nido Ranch RD built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1971.
What condition is State Route 24 over El Nido Ranch RD in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.
How much traffic does State Route 24 over El Nido Ranch RD carry?
About 79,500 vehicles per day (2019 count), of which roughly 3% are trucks.
How long is State Route 24 over El Nido Ranch RD?
The structure is 580 ft (176.8 m) long with a longest span of 110 ft (33.5 m) and a deck 70 ft wide.
Who owns State Route 24 over El Nido Ranch RD?
It is owned by the State Highway Agency.