Structure 21640-00029 · Sequoyah County, OK
Carries Entrance Road over Unnamed Field Drainage, Gravel Rd-1/4 Mi N Of Hq.
A culvert 22 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 | Sequoyah |
| Location | Gravel Rd-1/4 Mi N Of Hq |
| Carries | Entrance Road |
| Crosses | Unnamed Field Drainage |
| Coordinates | 35.45117, -94.97333 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 12.1 ft (3.7 m) |
| Deck Width | 23.3 ft (7.1 m) |
| Deck Area | 47.6 sq m |
| Main Spans | 2 |
| Year Built | 1940 |
| Avg Daily Traffic | 50 (2022) |
| Lanes On Bridge | 2 |
| Last Inspection | April 2022 |
| Inspection Frequency | Every 24 months |
| Owner | Code 63 |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 000021640-00029 |
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.