Structure 28 0153L · Contra Costa County, CA
Carries Interstate 680 SB over Up Bnsf Amtrak Suisun Ba, 04-cc-680-25.04l-mtz.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.
How ratings work6,215 ft end to end, longest span 528 ft: about 17 football fields, or 1.2 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 deck truss.
| State | California |
| County | Contra Costa |
| Location | 04-cc-680-25.04l-mtz |
| Carries | Interstate 680 SB |
| Crosses | Up Bnsf Amtrak Suisun Ba |
| Coordinates | 38.03322, -122.11728 |
| Material | Steel |
| Design | Truss - Deck |
| Total Length | 6214.9 ft (1894.3 m) |
| Max Span | 527.9 ft (160.9 m) |
| Deck Width | 77.4 ft (23.6 m) |
| Deck Area | 44705.5 sq m |
| Main Spans | 10 |
| Year Built | 1962 (reconstructed 1991) |
| Avg Daily Traffic | 115,000 (2015) |
| Truck Traffic | 8% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 4 |
| 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 | 5 — Stable for scour |
| Structure Number | 28 0153L |
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.