Structure 180430036404456 · Collin County, TX
Carries Sh121 To Us75 Conn over SH 121 & US 75, At Int US 75 & SH 121.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.
How ratings work4,807 ft end to end, longest span 132 ft: about 13 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 | Collin |
| Location | At Int US 75 & SH 121 |
| Carries | Sh121 To Us75 Conn |
| Crosses | SH 121 & US 75 |
| Coordinates | 33.16121, -96.63934 |
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 4807.1 ft (1465.2 m) |
| Max Span | 131.9 ft (40.2 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 12454.2 sq m |
| Main Spans | 38 |
| Year Built | 2011 |
| Avg Daily Traffic | 12,410 (2020) |
| Truck Traffic | 3% |
| Lanes On Bridge | 1 |
| Lanes Under Bridge | 37 |
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | Local Toll Authority |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | Not applicable |
| Structure Number | 180430036404456 |
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.