Structure 121700AA4680003 · Montgomery County, TX
Carries Lake Woodlands DR over Ditch C, 1.7 Mi W Of Grogans Mill.
A culvert 20 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 | Texas |
| County | Montgomery |
| Location | 1.7 Mi W Of Grogans Mill |
| Carries | Lake Woodlands DR |
| Crosses | Ditch C |
| Coordinates | 30.17087, -95.49040 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 20.0 ft (6.1 m) |
| Max Span | 8.9 ft (2.7 m) |
| Deck Area | 128.1 sq m |
| Main Spans | 2 |
| Year Built | 2000 |
| Avg Daily Traffic | 5,000 (2016) |
| Lanes On Bridge | 4 |
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 121700AA4680003 |
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.