Structure 720076 · Duval County, FL
Carries Sr-10a (mathews) over St. Johns Rv. & Alt-us-1, Sr-10a / St. Johns River.
Set by its lowest-rated component: Deck and Superstructure at 5 of 9.
How ratings work7,376 ft end to end, longest span 810 ft: about 20 football fields, or 1.4 miles. 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 through truss.
| State | Florida |
| County | Duval |
| Location | Sr-10a / St. Johns River |
| Carries | Sr-10a (mathews) |
| Crosses | St. Johns Rv. & Alt-us-1 |
| Coordinates | 30.32722, -81.62250 |
| Material | Steel Continuous |
| Design | Truss - Thru |
| Total Length | 7375.7 ft (2248.1 m) |
| Max Span | 810.0 ft (246.9 m) |
| Deck Width | 58.1 ft (17.7 m) |
| Deck Area | 39791.4 sq m |
| Main Spans | 6 |
| Year Built | 1953 |
| Avg Daily Traffic | 78,000 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 12 |
| Last Inspection | March 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Scour Critical | 7 — Countermeasures installed |
| Structure Number | 720076 |
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.