Ayers Road over Mount Diablo Creek
Poor Condition39 years old8,000 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 0.3 Mi N Clayton RD |
| Carries | Ayers Road |
| Crosses | Mount Diablo Creek |
| Coordinates | 37.95946, -121.96703 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 4 (Poor) |
| Substructure | 7 (Good) |
| Channel/Waterway | 9 (Excellent) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Slab |
| Total Length | 60.0 ft (18.3 m) |
| Max Span | 57.1 ft (17.4 m) |
| Deck Width | 54.1 ft (16.5 m) |
| Deck Area | 301.9 sq m |
| Main Spans | 1 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 8,000 (1990) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28C0362 |