Structure 580068 · Santa Rosa County, FL
Carries CR 399 over Unnamed Branch, 0.7 Mi South Of CR 164.
A culvert 21 ft across with 2 openings. 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, so those are drawn as typical for a culvert.
| State | Florida |
| County | Santa Rosa |
| Location | 0.7 Mi South Of CR 164 |
| Carries | CR 399 |
| Crosses | Unnamed Branch |
| Coordinates | 30.88499, -87.07987 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 21.0 ft (6.4 m) |
| Max Span | 10.5 ft (3.2 m) |
| Deck Area | 42.9 sq m |
| Main Spans | 2 |
| Year Built | 1901 (reconstructed 1960) |
| Avg Daily Traffic | 500 (2023) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
| Last Inspection | March 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 580068 |
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.