State Route 4 over Old River
Poor Condition111 years old8,200 vehicles/day
Location
| State | California |
| County | San Joaquin |
| Location | 10-sj-004-0.01 |
| Carries | State Route 4 |
| Crosses | Old River |
| Coordinates | 37.89025, -121.56965 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 7 (Good) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Steel |
| Design | Movable - Swing |
| Total Length | 527.9 ft (160.9 m) |
| Max Span | 131.9 ft (40.2 m) |
| Deck Width | 21.7 ft (6.6 m) |
| Deck Area | 1061.9 sq m |
| Main Spans | 2 |
| Year Built | 1915 |
Traffic
| Avg Daily Traffic | 8,200 (2009) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | 29 0045 |