Structure 34 0006 · San Francisco County, CA
Carries Interstate 80 over Gate San Francisco Bay, 04-sf-080-r7.91-sf.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.
How ratings work11,523 ft end to end, longest span 1,263 ft: about 32 football fields, or 2.2 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-r7.91-sf |
| Carries | Interstate 80 |
| Crosses | Gate San Francisco Bay |
| Coordinates | 37.81066, -122.36428 |
| Material | Steel Continuous |
| Design | Suspension |
| Total Length | 11523.3 ft (3512.3 m) |
| Max Span | 1263.1 ft (385 m) |
| Deck Width | 164.7 ft (50.2 m) |
| Deck Area | 176317.5 sq m |
| Main Spans | 2 |
| Year Built | 2013 |
| Avg Daily Traffic | 265,000 (2016) |
| Truck Traffic | 5% |
| Lanes On Bridge | 10 |
| Lanes Under Bridge | 6 |
| Last Inspection | September 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 34 0006 |
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.