Nicasio Vly RD over Nicasio Drain #1
Good Condition58 years old1,750 vehicles/day
Location
| State | California |
| County | Marin |
| Location | 12.4 Mi N Of HWY 101 |
| Carries | Nicasio Vly RD |
| Crosses | Nicasio Drain #1 |
| Coordinates | 38.07659, -122.70761 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 6 (Satisfactory) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 23.6 ft (7.2 m) |
| Max Span | 11.8 ft (3.6 m) |
| Deck Area | 87.1 sq m |
| Main Spans | 2 |
| Year Built | 1968 |
Traffic
| Avg Daily Traffic | 1,750 (1975) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 27C0032 |