ST Marys Road over Las Trampas Creek
Good Condition51 years old10,570 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 1.1 Mi N Rheem BLVD |
| Carries | ST Marys Road |
| Crosses | Las Trampas Creek |
| Coordinates | 37.86100, -122.10168 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 89.9 ft (27.4 m) |
| Max Span | 87.9 ft (26.8 m) |
| Deck Width | 45.9 ft (14 m) |
| Deck Area | 383.6 sq m |
| Main Spans | 1 |
| Year Built | 1975 |
Traffic
| Avg Daily Traffic | 10,570 (2016) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28C0138 |