Structure B55022400000000 · St. Croix County, WI
Carries Sth 64 over St. Croix River, 0.1m W. Of Wi-35.
5,079 ft end to end, longest span 600 ft: about 14 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 segmental box-girder bridge.
| State | Wisconsin |
| County | St. Croix |
| Location | 0.1m W. Of Wi-35 |
| Carries | Sth 64 |
| Crosses | St. Croix River |
| Coordinates | 45.04628, -92.78133 |
| Material | Concrete |
| Design | Segmental Box Girder |
| Total Length | 5079.1 ft (1548.1 m) |
| Max Span | 600.1 ft (182.9 m) |
| Deck Width | 86.6 ft (26.4 m) |
| Deck Area | 40869.8 sq m |
| Main Spans | 14 |
| Year Built | 2017 |
| Avg Daily Traffic | 28,000 (2021) |
| Truck Traffic | 7% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 4 |
| Last Inspection | August 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | B55022400000000 |
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.