Structure D 681 · Cache County, UT
Carries Sr-23 over West Cache Canal, 5 Miles N. Of Trenton.
Set by its lowest-rated component: Deck and Superstructure at 6 of 9.
How ratings work23 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 rigid-frame bridge.
| State | Utah |
| County | Cache |
| Location | 5 Miles N. Of Trenton |
| Carries | Sr-23 |
| Crosses | West Cache Canal |
| Coordinates | 41.98611, -111.95472 |
| Material | Concrete |
| Design | Frame |
| Total Length | 22.6 ft (6.9 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Width | 41.3 ft (12.6 m) |
| Deck Area | 86.9 sq m |
| Main Spans | 1 |
| Year Built | 1960 |
| Avg Daily Traffic | 1,403 (2017) |
| Truck Traffic | 25% |
| Lanes On Bridge | 2 |
| Last Inspection | July 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 0D 681 |
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.