Structure 34 0003 · San Francisco County, CA
Carries Interstate 80 over San Francisco Bay 3 Sts, 04-sf-080-6.35l-sf.
Set by its lowest-rated component: Deck and Superstructure at 5 of 9.
How ratings work10,303 ft end to end, longest span 2,310 ft: about 29 football fields, or 2.0 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 a suspension bridge.
| State | California |
| County | San Francisco |
| Location | 04-sf-080-6.35l-sf |
| Carries | Interstate 80 |
| Crosses | San Francisco Bay 3 Sts |
| Coordinates | 37.78643, -122.39058 |
| Material | Steel |
| Design | Suspension |
| Total Length | 10303.5 ft (3140.5 m) |
| Max Span | 2310.0 ft (704.1 m) |
| Deck Width | 125.3 ft (38.2 m) |
| Deck Area | 119967.1 sq m |
| Main Spans | 6 |
| Year Built | 1936 (reconstructed 1962) |
| Avg Daily Traffic | 200,000 (2020) |
| Truck Traffic | 3% |
| Lanes On Bridge | 10 |
| Lanes Under Bridge | 24 |
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is on the National Register of Historic Places |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 34 0003 |
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.