Interstate 280 over Southgate Avenue
Poor Condition59 years old178,000 vehicles/day
Location
| State | California |
| County | San Mateo |
| Location | 04-sm-280-r25.04-dlc |
| Carries | Interstate 280 |
| Crosses | Southgate Avenue |
| Coordinates | 37.67498, -122.46902 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 185.0 ft (56.4 m) |
| Max Span | 91.5 ft (27.9 m) |
| Deck Width | 179.5 ft (54.7 m) |
| Deck Area | 3085.1 sq m |
| Main Spans | 3 |
| Year Built | 1967 |
Traffic
| Avg Daily Traffic | 178,000 (2009) |
| Truck Traffic | 1% |
| Lanes On Bridge | 11 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 35 0178 |