Structure 740105 · Nassau County, FL
Carries Sr-105 & Sr-a1a over Nassau Sound, 10 Mi. S. Of Fernandina.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.
How ratings work5,130 ft end to end, longest span 95 ft: about 14 football fields. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.
| State | Florida |
| County | Nassau |
| Location | 10 Mi. S. Of Fernandina |
| Carries | Sr-105 & Sr-a1a |
| Crosses | Nassau Sound |
| Coordinates | 30.51806, -81.45028 |
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 5129.9 ft (1563.6 m) |
| Max Span | 94.8 ft (28.9 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 22515.8 sq m |
| Main Spans | 54 |
| Year Built | 1999 |
| Avg Daily Traffic | 5,000 (2022) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
| Last Inspection | May 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 740105 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.