US 60 over Waterfall Canyon
Pinal County, Arizona · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 60 over Waterfall Canyon in Pinal County, Arizona, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1929 and reconstructed in 1949, making it 96 years old at the 2025 inventory.
- It carries about 8,079 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (33.30972, -111.06781)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 96 ft |
| Location | 2.6 mi E Jct SR 177 |
| NBI structure number | 00328 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Arizona department of transportation.
All bridges nearby: Pinal County, AZ bridge conditions · Arizona bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.