State Route 1 NB over Southgate Avenue
Fair Condition58 years old32,500 vehicles/day
Location
| State | California |
| County | San Mateo |
| Location | 04-sm-001-r47.62-dlc |
| Carries | State Route 1 NB |
| Crosses | Southgate Avenue |
| Coordinates | 37.67566, -122.47266 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 168.0 ft (51.2 m) |
| Max Span | 81.0 ft (24.7 m) |
| Deck Width | 50.9 ft (15.5 m) |
| Deck Area | 793.6 sq m |
| Main Spans | 3 |
| Year Built | 1968 |
Traffic
| Avg Daily Traffic | 32,500 (2009) |
| Truck Traffic | 2% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 35 0238R |