Structure F 424 · Morgan County, UT
Carries Sr-66 over East Canyon Creek, 2.5 Mi.east Portersville.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.
How ratings work25 ft end to end. 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 tee-beam bridge.
| State | Utah |
| County | Morgan |
| Location | 2.5 Mi.east Portersville |
| Carries | Sr-66 |
| Crosses | East Canyon Creek |
| Coordinates | 40.94975, -111.65712 |
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 24.9 ft (7.6 m) |
| Max Span | 24.6 ft (7.5 m) |
| Deck Width | 28.9 ft (8.8 m) |
| Deck Area | 66.9 sq m |
| Main Spans | 1 |
| Year Built | 1930 (reconstructed 1978) |
| Avg Daily Traffic | 415 (2014) |
| Truck Traffic | 34% |
| Lanes On Bridge | 2 |
| Last Inspection | July 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 7 — Countermeasures installed |
| Structure Number | 0F 424 |
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.