Structure 57 0857 · San Diego County, CA
Carries State Route 75 over San Diego Bay Harbor DR, 11-sd-075-r20.49-sd.
Set by its lowest-rated component: Deck and Substructure at 6 of 9.
How ratings work7,826 ft end to end, longest span 660 ft: about 22 football fields, or 1.5 miles. 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 an orthotropic-deck bridge.
| State | California |
| County | San Diego |
| Location | 11-sd-075-r20.49-sd |
| Carries | State Route 75 |
| Crosses | San Diego Bay Harbor DR |
| Coordinates | 32.68856, -117.16415 |
| Material | Steel |
| Design | Orthotropic |
| Total Length | 7826.1 ft (2385.4 m) |
| Max Span | 660.1 ft (201.2 m) |
| Deck Width | 65.9 ft (20.1 m) |
| Deck Area | 47946.5 sq m |
| Main Spans | 3 |
| Year Built | 1969 |
| Avg Daily Traffic | 85,000 (2022) |
| Truck Traffic | 4% |
| Lanes On Bridge | 5 |
| Lanes Under Bridge | 6 |
| Last Inspection | August 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 57 0857 |
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.