Structure 33 0628F · Alameda County, CA
Carries S680-e580 Conn Sep over I-680 I-580 Dublin Bl, 04-ala-680-r20.72-ple.
4,396 ft end to end, longest span 290 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 | Alameda |
| Location | 04-ala-680-r20.72-ple |
| Carries | S680-e580 Conn Sep |
| Crosses | I-680 I-580 Dublin Bl |
| Coordinates | 37.70160, -121.91715 |
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 4396.3 ft (1,340 m) |
| Max Span | 290.0 ft (88.4 m) |
| Deck Width | 42.7 ft (13 m) |
| Deck Area | 17,420 sq m |
| Main Spans | 20 |
| Year Built | 2001 |
| Avg Daily Traffic | 125,000 (2010) |
| That is about 62,500 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings. | |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 18 |
| Last Inspection | April 2024 |
| 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 0628F |
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.