Structure 170940B00685001 · Grimes County, TX
Carries Montgomery RD over Sandy Creek Tributary, 0.16 Mi NW Of FM 515.
A culvert 23 ft across. 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 | Grimes |
| Location | 0.16 Mi NW Of FM 515 |
| Carries | Montgomery RD |
| Crosses | Sandy Creek Tributary |
| Coordinates | 30.37713, -96.07661 |
| Material | Steel |
| Design | Culvert |
| Total Length | 23.0 ft (7 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 34.4 ft (10.5 m) |
| Deck Area | 73.5 sq m |
| Main Spans | 1 |
| Year Built | 1988 |
| Avg Daily Traffic | 150 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 1 |
| Last Inspection | March 2024 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 4 — Foundations need monitoring |
| Structure Number | 170940B00685001 |
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.