Structure 16760000000000 · Adair County, OK
Carries U.s. 59 over Shell Branch West, 7.2 Mi.n.jct.sh 51.
A culvert 23 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 | 7.2 Mi.n.jct.sh 51 |
| Carries | U.s. 59 |
| Crosses | Shell Branch West |
| Coordinates | 35.92628, -94.61405 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 23.0 ft (7 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Width | 39.0 ft (11.9 m) |
| Deck Area | 83.3 sq m |
| Main Spans | 2 |
| Year Built | 1926 |
| Avg Daily Traffic | 3,800 (2022) |
| Truck Traffic | 16% |
| Lanes On Bridge | 2 |
| Last Inspection | April 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 4 — Foundations need monitoring |
| Structure Number | 016760000000000 |
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.