Structure 176880000000000 · Ottawa County, OK
Carries IRR E0020 over Lytle Creek, E0020n4580001.
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 | Oklahoma |
| County | Ottawa |
| Location | E0020n4580001 |
| Carries | IRR E0020 |
| Crosses | Lytle Creek |
| Coordinates | 36.98694, -94.81083 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 21.0 ft (6.4 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Width | 28.9 ft (8.8 m) |
| Deck Area | 56.3 sq m |
| Main Spans | 2 |
| Year Built | 1970 |
| Avg Daily Traffic | 200 (2022) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Last Inspection | September 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 4 — Foundations need monitoring |
| Structure Number | 176880000000000 |
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.