State Route 131 over US Highway 101
Good Condition70 years old27,250 vehicles/day
Location
| State | California |
| County | Marin |
| Location | 04-mrn-131-0.01 |
| Carries | State Route 131 |
| Crosses | US Highway 101 |
| Coordinates | 37.90270, -122.51611 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 222.4 ft (67.8 m) |
| Max Span | 77.8 ft (23.7 m) |
| Deck Width | 65.9 ft (20.1 m) |
| Deck Area | 1362.8 sq m |
| Main Spans | 4 |
| Year Built | 1956 |
Traffic
| Avg Daily Traffic | 27,250 (2009) |
| Truck Traffic | 2% |
| 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 0069 |