Structure 28 0361L · Contra Costa County, CA
Carries WB Route 4 over Private Access Road, 04-cc-004-r3.87l-mtz.
Set by its lowest-rated component: Superstructure and Substructure at 7 of 9.
How ratings work22 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-r3.87l-mtz |
| Carries | WB Route 4 |
| Crosses | Private Access Road |
| Coordinates | 38.00909, -122.20630 |
| Material | Steel |
| Design | Arch - Deck |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 22.0 ft (6.7 m) |
| Deck Width | 57.1 ft (17.4 m) |
| Deck Area | 116.6 sq m |
| Main Spans | 1 |
| Year Built | 2002 |
| Avg Daily Traffic | 10,200 (2018) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
| 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 0361L |
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.