Twin Oaks Vly Road over E. Br. San Marcos Creek
GoodSan Diego County, California · At WB78 Ramps · Structure no. 57C0869
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected March 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 716 ft
- 5 main spans
- Daily traffic
- 25,900
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Twin Oaks Vly Road over E. Br. San Marcos Creek is a concrete continuous culvert carrying Twin Oaks Vly Road over E. Br. San Marcos Creek in San Diego County, California. It was built in 1992, so it is 33 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 25,900 vehicles a day, roughly 3% of them trucks, projected to reach 31,100 by 2045. The structure is 716 ft (218.2 m) long. If it were closed, the detour would be 1.9 mi (3 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Twin Oaks Vly Road over E. Br. San Marcos Creek built?
It was built in 1992, making it 33 years old in 2025.
What condition is Twin Oaks Vly Road over E. Br. San Marcos Creek 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 March 2023.
How much traffic does Twin Oaks Vly Road over E. Br. San Marcos Creek carry?
About 25,900 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Twin Oaks Vly Road over E. Br. San Marcos Creek?
The structure is 716 ft (218.2 m) long with a longest span of 11 ft (3.4 m).
Who owns Twin Oaks Vly Road over E. Br. San Marcos Creek?
It is owned by the City or Municipal Highway Agency.