Sr-312 WB over Matanzas River
Good Condition27 years old19,000 vehicles/day
Location
| State | Florida |
| County | St. Johns |
| Location | Sr-312 WB Over Matanzas R |
| Carries | Sr-312 WB |
| Crosses | Matanzas River |
| Coordinates | 29.86722, -81.30750 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 3575.1 ft (1089.7 m) |
| Max Span | 250.0 ft (76.2 m) |
| Deck Width | 42.7 ft (13 m) |
| Deck Area | 14166.1 sq m |
| Main Spans | 3 |
| Year Built | 1999 |
Traffic
| Avg Daily Traffic | 19,000 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 780100 |