Structure 28 0009 · Contra Costa County, CA
Carries SR 160 over San Joaquin Rivr Antioch, 04-cc-160-0.82.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.
How ratings work9,437 ft end to end, longest span 460 ft: about 26 football fields, or 1.8 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 multi-beam bridge.
| State | California |
| County | Contra Costa |
| Location | 04-cc-160-0.82 |
| Carries | SR 160 |
| Crosses | San Joaquin Rivr Antioch |
| Coordinates | 38.01680, -121.75148 |
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 9437.0 ft (2876.4 m) |
| Max Span | 460.0 ft (140.2 m) |
| Deck Width | 43.6 ft (13.3 m) |
| Deck Area | 38256.1 sq m |
| Main Spans | 40 |
| Year Built | 1978 |
| Avg Daily Traffic | 18,900 (2021) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
| Last Inspection | March 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 28 0009 |
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.