Structure 170210011604043 · Brazos County, TX
Carries SH 21 over Brazos River Relief, 0.35 Mi W Of FM 50.
A culvert 23 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 | Brazos |
| Location | 0.35 Mi W Of FM 50 |
| Carries | SH 21 |
| Crosses | Brazos River Relief |
| Coordinates | 30.63686, -96.53861 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 23.0 ft (7 m) |
| Max Span | 6.9 ft (2.1 m) |
| Deck Width | 124.0 ft (37.8 m) |
| Deck Area | 264.6 sq m |
| Main Spans | 3 |
| Year Built | 1971 (reconstructed 1986) |
| Avg Daily Traffic | 16,154 (2020) |
| Lanes On Bridge | 5 |
| Last Inspection | February 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 170210011604043 |
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.