Structure 28 0235 · Contra Costa County, CA
Carries State Route 4 over Franklin Equip & Pipe Uc, 04-cc-004-r7.27.
21 ft end to end. 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 arch.
| State | California |
| County | Contra Costa |
| Location | 04-cc-004-r7.27 |
| Carries | State Route 4 |
| Crosses | Franklin Equip & Pipe Uc |
| Coordinates | 37.99896, -122.14665 |
| Material | Steel |
| Design | Arch - Deck |
| Total Length | 20.7 ft (6.3 m) |
| Max Span | 20.7 ft (6.3 m) |
| Deck Area | 141.1 sq m |
| Main Spans | 1 |
| Year Built | 1967 |
| Avg Daily Traffic | 55,000 (2018) |
| Truck Traffic | 8% |
| Lanes On Bridge | 4 |
| Last Inspection | May 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 | 28 0235 |
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.