Structure 160303 · Polk County, FL
Carries I-4 (sr-400) over Winston Drain, 0.5 Mi E/o Polk PKWY.
A culvert 22 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 | Polk |
| Location | 0.5 Mi E/o Polk PKWY |
| Carries | I-4 (sr-400) |
| Crosses | Winston Drain |
| Coordinates | 28.04012, -82.03200 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Area | 269.3 sq m |
| Main Spans | 2 |
| Year Built | 1999 |
| Avg Daily Traffic | 127,000 (2024) |
| Truck Traffic | 16% |
| Lanes On Bridge | 11 |
| Last Inspection | July 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 160303 |
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.