State Route 24 over El Nido Ranch RD Aqueduc
FairContra Costa County, California · 04-CC-024-R4.90-LFYT · Structure no. 28 0137L
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 568 ft
- 9 main spans
- Daily traffic
- 79,500
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 24 over El Nido Ranch RD Aqueduc is a concrete continuous box beam or girders - multiple carrying State Route 24 over El Nido Ranch RD Aqueduc in Contra Costa County, California. It was built in 1969, so it is 56 years old, older 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 5 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 568 ft (173.2 m) long and 68 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 El Nido Ranch RD Aqueduc built?
It was built in 1969, making it 56 years old in 2025.
What condition is State Route 24 over El Nido Ranch RD Aqueduc 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 El Nido Ranch RD Aqueduc 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 Aqueduc?
The structure is 568 ft (173.2 m) long with a longest span of 100 ft (30.5 m) and a deck 68 ft wide.
Who owns State Route 24 over El Nido Ranch RD Aqueduc?
It is owned by the State Highway Agency.