Structure 271540000000000 · Adair County, OK
Carries N4706 (8th St.) over Drainage Ditch, .5n .4w N. Sh100/us59 Jct.
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 | Adair |
| Location | .5n .4w N. Sh100/us59 Jct |
| Carries | N4706 (8th St.) |
| Crosses | Drainage Ditch |
| Coordinates | 35.81917, -94.63500 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 21.0 ft (6.4 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Area | 42.9 sq m |
| Main Spans | 2 |
| Year Built | 1965 |
| Avg Daily Traffic | 250 (2022) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
| Last Inspection | July 2023 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 271540000000000 |
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.