El Nido Ranch RD over Lafayette Aqueduct
Good Condition57 years old2,843 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 0.1 Mi N Mt Diablo |
| Carries | El Nido Ranch RD |
| Crosses | Lafayette Aqueduct |
| Coordinates | 37.89096, -122.14427 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 9 — Foundation above flood level |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 170.9 ft (52.1 m) |
| Max Span | 84.0 ft (25.6 m) |
| Deck Width | 46.9 ft (14.3 m) |
| Deck Area | 745.0 sq m |
| Main Spans | 2 |
| Year Built | 1969 |
Traffic
| Avg Daily Traffic | 2,843 (2021) |
| Truck Traffic | 1% |
| 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 | 28C0178 |