Structure 121700351007175 · Montgomery County, TX
Carries SH 99 over San Jacinto River, 3.00 Mi W Of FM 1314.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.
How ratings work5,324 ft end to end, longest span 125 ft: about 15 football fields, or 1.0 miles. 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 or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.
| State | Texas |
| County | Montgomery |
| Location | 3.00 Mi W Of FM 1314 |
| Carries | SH 99 |
| Crosses | San Jacinto River |
| Coordinates | 30.13474, -95.35040 |
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 5324.1 ft (1622.8 m) |
| Max Span | 125.0 ft (38.1 m) |
| Deck Width | 86.0 ft (26.2 m) |
| Deck Area | 42517.4 sq m |
| Main Spans | 46 |
| Year Built | 2016 |
| Avg Daily Traffic | 6,000 (2016) |
| Truck Traffic | 5% |
| Lanes On Bridge | 4 |
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 121700351007175 |
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.