Structure 35 0252L · San Mateo County, CA
Carries SR 92 WB & Ramps over U.s. 101 Marina Lagoon, 04-sm-092-r11.78-sm.
4,282 ft end to end, longest span 220 ft: about 12 football fields. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.
| State | California |
| County | San Mateo |
| Location | 04-sm-092-r11.78-sm |
| Carries | SR 92 WB & Ramps |
| Crosses | U.s. 101 Marina Lagoon |
| Coordinates | 37.55270, -122.30242 |
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 4282.2 ft (1305.2 m) |
| Max Span | 220.1 ft (67.1 m) |
| Deck Width | 41.7 ft (12.7 m) |
| Deck Area | 16576.0 sq m |
| Main Spans | 81 |
| Year Built | 1971 |
| Avg Daily Traffic | 55,500 (2022) |
| Truck Traffic | 5% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 21 |
| Last Inspection | August 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 35 0252L |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.