Structure 12258 · Osage County, MO
Carries County RD 435 over Owl CR, S 25 T 45 N R 9 W.
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 | Missouri |
| County | Osage |
| Location | S 25 T 45 N R 9 W |
| Carries | County RD 435 |
| Crosses | Owl CR |
| Coordinates | 38.63497, -91.86797 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 24.9 ft (7.6 m) |
| Max Span | 11.2 ft (3.4 m) |
| Deck Width | 21.0 ft (6.4 m) |
| Deck Area | 48.6 sq m |
| Main Spans | 2 |
| Year Built | 1960 |
| Avg Daily Traffic | 15 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Last Inspection | April 2023 |
| 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 | 12258 |
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.