Structure B1871 · Churchill County, NV
Carries Allen Road over Aa Canal, South Of Fallon.
Set by its lowest-rated component: Deck and Superstructure at 7 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 | Nevada |
| County | Churchill |
| Location | South Of Fallon |
| Carries | Allen Road |
| Crosses | Aa Canal |
| Coordinates | 39.40690, -118.80049 |
| Material | Concrete |
| Design | Frame |
| Total Length | 23.0 ft (7 m) |
| Max Span | 21.0 ft (6.4 m) |
| Deck Width | 30.2 ft (9.2 m) |
| Deck Area | 64.4 sq m |
| Main Spans | 1 |
| Year Built | 1975 |
| Avg Daily Traffic | 2,000 (2017) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
| Last Inspection | January 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | B1871 |
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.