State Route 1 over Navarro River
Good Condition77 years old1,100 vehicles/day
Location
| State | California |
| County | Mendocino |
| Location | 01-men-001-40.18 |
| Carries | State Route 1 |
| Crosses | Navarro River |
| Coordinates | 39.19637, -123.74755 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 478.0 ft (145.7 m) |
| Max Span | 144.0 ft (43.9 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 1427.9 sq m |
| Main Spans | 2 |
| Year Built | 1949 |
Traffic
| Avg Daily Traffic | 1,100 (2009) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 10 0130 |