South Main ST over Las Trampas Creek
Good Condition107 years old17,700 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 0.1 Mi S Olympic BLVD |
| Carries | South Main ST |
| Crosses | Las Trampas Creek |
| Coordinates | 37.89471, -122.05891 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 130.9 ft (39.9 m) |
| Max Span | 27.9 ft (8.5 m) |
| Deck Width | 65.6 ft (20 m) |
| Deck Area | 798 sq m |
| Main Spans | 5 |
| Year Built | 1919 (reconstructed 1956) |
Traffic
| Avg Daily Traffic | 17,700 (2019) |
| Truck Traffic | 3% |
| Lanes On Bridge | 5 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28C0075 |