State Route 1 over Lagunitas Creek Overflow
Good Condition97 years old3,500 vehicles/day
Location
| State | California |
| County | Marin |
| Location | 04-mrn-001-28.56 |
| Carries | State Route 1 |
| Crosses | Lagunitas Creek Overflow |
| Coordinates | 38.06542, -122.80506 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 4 (Poor) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 33.1 ft (10.1 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Width | 33.1 ft (10.1 m) |
| Deck Area | 102.0 sq m |
| Main Spans | 3 |
| Year Built | 1929 |
Traffic
| Avg Daily Traffic | 3,500 (2021) |
| Truck Traffic | 4% |
| 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 0024 |