Structure 29 0269 · San Joaquin County, CA
Carries State Route 4 over Crosstown FWY Viaduct, 10-sj-004-r16.62-stkn.
Set by its lowest-rated component: Deck and Superstructure at 5 of 9.
How ratings work4,367 ft end to end, longest span 130 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 | San Joaquin |
| Location | 10-sj-004-r16.62-stkn |
| Carries | State Route 4 |
| Crosses | Crosstown FWY Viaduct |
| Coordinates | 37.94970, -121.29054 |
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 4367.1 ft (1331.1 m) |
| Max Span | 129.9 ft (39.6 m) |
| Deck Width | 108.6 ft (33.1 m) |
| Deck Area | 44059.4 sq m |
| Main Spans | 36 |
| Year Built | 1975 (reconstructed 1988) |
| Avg Daily Traffic | 74,000 (2009) |
| Truck Traffic | 10% |
| Lanes On Bridge | 6 |
| Lanes Under Bridge | 23 |
| Last Inspection | June 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 | 29 0269 |
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.