Structure 121020017809449 · Harris County, TX
Carries US 59 Dc over City Streets And Hov, US 59 At IH 45.
Set by its lowest-rated component: Deck and Substructure at 6 of 9.
How ratings work6,813 ft end to end, longest span 148 ft: about 19 football fields, or 1.3 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 | Harris |
| Location | US 59 At IH 45 |
| Carries | US 59 Dc |
| Crosses | City Streets And Hov |
| Coordinates | 29.73158, -95.34147 |
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 6813.0 ft (2076.6 m) |
| Max Span | 148.0 ft (45.1 m) |
| Deck Width | 52.2 ft (15.9 m) |
| Deck Area | 33017.9 sq m |
| Main Spans | 51 |
| Year Built | 1985 (reconstructed 2019) |
| Avg Daily Traffic | 54,300 (2016) |
| Truck Traffic | 10% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 28 |
| Last Inspection | December 2022 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | Not applicable |
| Structure Number | 121020017809449 |
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.