State Route 99 SB over Lone Tree Slough
Fair Condition71 years old85,000 vehicles/day
Location
| State | California |
| County | San Joaquin |
| Location | 10-sj-099-11.80 |
| Carries | State Route 99 SB |
| Crosses | Lone Tree Slough |
| Coordinates | 37.86441, -121.21893 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 63.0 ft (19.2 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Width | 135.2 ft (41.2 m) |
| Deck Area | 791.0 sq m |
| Main Spans | 3 |
| Year Built | 1955 (reconstructed 2014) |
Traffic
| Avg Daily Traffic | 85,000 (2020) |
| Truck Traffic | 13% |
| Lanes On Bridge | 8 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 29 0023 |