San Antonio RD over South San Antonio Creek
Fair Condition109 years old200 vehicles/day
Location
| State | California |
| County | Marin |
| Location | 0.6 Mi N Of US 101 |
| Carries | San Antonio RD |
| Crosses | South San Antonio Creek |
| Coordinates | 38.18115, -122.60336 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Girder and Floorbeam |
| Total Length | 101.0 ft (30.8 m) |
| Max Span | 49.5 ft (15.1 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 224.8 sq m |
| Main Spans | 2 |
| Year Built | 1917 |
Traffic
| Avg Daily Traffic | 200 (1979) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | 27C0051 |