Structure 33 0611R · Alameda County, CA
Carries Interstate 880 NB over Up Rr Bnsf Ry Amtrak Por, 04-ala-880-r34.00r-oak.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.
How ratings work8,182 ft end to end, longest span 336 ft: about 23 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 a box-beam bridge.
| State | California |
| County | Alameda |
| Location | 04-ala-880-r34.00r-oak |
| Carries | Interstate 880 NB |
| Crosses | Up Rr Bnsf Ry Amtrak Por |
| Coordinates | 37.81395, -122.30093 |
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 8182.4 ft (2,494 m) |
| Max Span | 336.0 ft (102.4 m) |
| Deck Width | 54.5 ft (16.6 m) |
| Deck Area | 41400.4 sq m |
| Main Spans | 44 |
| Year Built | 1998 |
| Avg Daily Traffic | 126,000 (2009) |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 18 |
| Last Inspection | March 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | Not applicable |
| Structure Number | 33 0611R |
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.