First Street over Napa River
Good Condition17 years old23,200 vehicles/day
Location
| State | California |
| County | Napa |
| Location | 0.1 Mi W Of SR 121 |
| Carries | First Street |
| Crosses | Napa River |
| Coordinates | 38.30223, -122.27929 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 9 (Excellent) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 167.0 ft (50.9 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 64.0 ft (19.5 m) |
| Deck Area | 992.5 sq m |
| Main Spans | 3 |
| Year Built | 2009 |
Traffic
| Avg Daily Traffic | 23,200 (2009) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 48 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 21C0130 |