Structure 10920004718032 · Grayson County, TX
Carries SH 91 over Post Oak Crk Trib, 1.0 Mi S Of US 82.
A culvert 24 ft across with 3 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 | Texas |
| County | Grayson |
| Location | 1.0 Mi S Of US 82 |
| Carries | SH 91 |
| Crosses | Post Oak Crk Trib |
| Coordinates | 33.65650, -96.61235 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 6.9 ft (2.1 m) |
| Deck Area | 133.6 sq m |
| Main Spans | 3 |
| Year Built | 1943 |
| Avg Daily Traffic | 13,766 (2020) |
| Truck Traffic | 16% |
| Lanes On Bridge | 4 |
| Last Inspection | May 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Scour Critical | 6 — Scour calculated, stable |
| Structure Number | 010920004718032 |
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.