State Route 78 over Las Posas RD
GoodSan Diego County, California · 11-SD-078-11.18-SMCS · Structure no. 57 0385
- Built
- 1994
- 31 years old
- Condition
- Good
- inspected April 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 156 ft
- 2 main spans
- Daily traffic
- 136,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 78 over Las Posas RD is a prestressed concrete continuous box beam or girders - multiple carrying State Route 78 over Las Posas RD in San Diego County, California. It was built in 1994, so it is 31 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 136,000 vehicles a day, roughly 5% of them trucks, projected to reach 218,607 by 2040. The structure is 156 ft (47.5 m) long and 117 ft wide. If it were closed, the detour would be 1.2 mi (2 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 78 over Las Posas RD built?
It was built in 1994, making it 31 years old in 2025.
What condition is State Route 78 over Las Posas RD 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 April 2023.
How much traffic does State Route 78 over Las Posas RD carry?
About 136,000 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is State Route 78 over Las Posas RD?
The structure is 156 ft (47.5 m) long with a longest span of 90 ft (27.4 m) and a deck 117 ft wide.
Who owns State Route 78 over Las Posas RD?
It is owned by the State Highway Agency.