State Route 78 over San Marcos Creek
Good Condition64 years old152,000 vehicles/day
Location
| State | California |
| County | San Diego |
| Location | 11-sd-078-12.42-smcs |
| Carries | State Route 78 |
| Crosses | San Marcos Creek |
| Coordinates | 33.13653, -117.17244 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 76.1 ft (23.2 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Area | 828.2 sq m |
| Main Spans | 5 |
| Year Built | 1962 |
Traffic
| Avg Daily Traffic | 152,000 (2020) |
| Truck Traffic | 5% |
| Lanes On Bridge | 8 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 57 0514 |