W Castlewood Drive over San Rafael Bay Inlet
Good Condition61 years old500 vehicles/day
Location
| State | California |
| County | Marin |
| Location | SW Of Knight Drive |
| Carries | W Castlewood Drive |
| Crosses | San Rafael Bay Inlet |
| Coordinates | 37.98420, -122.47872 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 25.9 ft (7.9 m) |
| Max Span | 12.8 ft (3.9 m) |
| Deck Width | 44.3 ft (13.5 m) |
| Deck Area | 106.7 sq m |
| Main Spans | 2 |
| Year Built | 1965 |
Traffic
| Avg Daily Traffic | 500 (2021) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 27C0170 |