Structure 121020038913344 · Harris County, TX
Carries Sp330e To SH 146 C over SH 146, At Int SH 146 & Spur 330.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.
How ratings work4,334 ft end to end: about 12 football fields. 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 | At Int SH 146 & Spur 330 |
| Carries | Sp330e To SH 146 C |
| Crosses | SH 146 |
| Coordinates | 29.75286, -94.99062 |
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 4334.0 ft (1,321 m) |
| Max Span | 145.0 ft (44.2 m) |
| Deck Width | 28.9 ft (8.8 m) |
| Deck Area | 11624.8 sq m |
| Main Spans | 1 |
| Year Built | 2010 (reconstructed 2014) |
| Avg Daily Traffic | 51,900 (2013) |
| That is about 51,900 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings. | |
| Lanes On Bridge | 1 |
| Lanes Under Bridge | 13 |
| 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 | 121020038913344 |
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.