Trancas ST over Milliken Creek
Fair Condition53 years old9,000 vehicles/day
Location
| State | California |
| County | Napa |
| Location | Just West Of SR 121 |
| Carries | Trancas ST |
| Crosses | Milliken Creek |
| Coordinates | 38.32544, -122.27481 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 99.1 ft (30.2 m) |
| Max Span | 48.9 ft (14.9 m) |
| Deck Width | 57.1 ft (17.4 m) |
| Deck Area | 525.5 sq m |
| Main Spans | 2 |
| Year Built | 1973 |
Traffic
| Avg Daily Traffic | 9,000 (2012) |
| Truck Traffic | 10% |
| Lanes On Bridge | 3 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 21C0026 |