Structure 180430036404627 · Collin County, TX
Carries Srt S To Dnt S over Dnt Srt Hdq DR, Dnt SH 121 Toll RD.
5,652 ft end to end, longest span 294 ft: about 16 football fields, or 1.1 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 | Collin |
| Location | Dnt SH 121 Toll RD |
| Carries | Srt S To Dnt S |
| Crosses | Dnt Srt Hdq DR |
| Coordinates | 33.08250, -96.82464 |
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 5651.9 ft (1722.7 m) |
| Max Span | 294.0 ft (89.6 m) |
| Deck Width | 38.1 ft (11.6 m) |
| Deck Area | 19983.3 sq m |
| Main Spans | 9 |
| Year Built | 2011 |
| Avg Daily Traffic | 3,990 (2018) |
| Truck Traffic | 3% |
| Lanes On Bridge | 1 |
| Lanes Under Bridge | 29 |
| Last Inspection | November 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 | 180430036404627 |
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.