Structure 34177 · Collier County, FL
Carries Cr-858 over Drainage Canal, 8.6 Mi W/o Sr-29.
A culvert 25 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 | Collier |
| Location | 8.6 Mi W/o Sr-29 |
| Carries | Cr-858 |
| Crosses | Drainage Canal |
| Coordinates | 26.29411, -81.47944 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 24.6 ft (7.5 m) |
| Max Span | 12.8 ft (3.9 m) |
| Deck Area | 211.5 sq m |
| Main Spans | 2 |
| Year Built | 2012 |
| Avg Daily Traffic | 4,500 (2024) |
| Truck Traffic | 18% |
| Lanes On Bridge | 4 |
| Last Inspection | January 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 034177 |
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.