State Route 1 over Tomasini Canyon
Fair Condition101 years old2,300 vehicles/day
Location
| State | California |
| County | Marin |
| Location | 04-mrn-001-29.85 |
| Carries | State Route 1 |
| Crosses | Tomasini Canyon |
| Coordinates | 38.07983, -122.80598 |
Condition Ratings
| Overall Condition | Fair |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 24.9 ft (7.6 m) |
| Max Span | 16.1 ft (4.9 m) |
| Deck Width | 32.8 ft (10 m) |
| Deck Area | 76 sq m |
| Main Spans | 1 |
| Year Built | 1925 (reconstructed 1978) |
Traffic
| Avg Daily Traffic | 2,300 (2020) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 27 0056 |