Tamalpais Drive over US Highway 101
Fair Condition69 years old40,000 vehicles/day
Location
| State | California |
| County | Marin |
| Location | 04-mrn-101-7.37-cmad |
| Carries | Tamalpais Drive |
| Crosses | US Highway 101 |
| Coordinates | 37.92537, -122.51592 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 801.8 ft (244.4 m) |
| Max Span | 83.0 ft (25.3 m) |
| Deck Width | 63.6 ft (19.4 m) |
| Deck Area | 4741.4 sq m |
| Main Spans | 4 |
| Year Built | 1957 (reconstructed 1985) |
Traffic
| Avg Daily Traffic | 40,000 (2003) |
| Truck Traffic | 1% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 10 |
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 0072 |