I 19; Nb-sb & Efr over Niger Canyon
Santa Cruz County, Arizona · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 19; Nb-sb & Efr over Niger Canyon in Santa Cruz County, Arizona, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1978, making it 47 years old at the 2025 inventory.
- It carries about 17,500 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 77 of the 137 inventoried bridges in Santa Cruz County rated good (56.2%); 1 (0.7%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (31.55, -111.04722)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 37 ft |
| Location | 9.4 mi North Jct SR 289 |
| NBI structure number | 06664 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Arizona department of transportation.
Busiest bridges in Santa Cruz County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 19; Nb-sb-e & Wf over Alamo Canyon | 1949 | 31,010 | Good |
| I19 N & S & FRs over Wash | 1951 | 30,755 | Good |
| I 19 over Calabasas Canyon | 1951 | 27,010 | Good |
| I 19 over Dry Wash | 1977 | 19,924 | Good |
| I 19 over Tubac Creek Wash | 1978 | 19,046 | Good |
| SB 19; Fap 001 over Mariposa Canyon | 1968 | 18,989 | Fair |
All bridges nearby: Santa Cruz County, AZ bridge conditions · every bridge in Santa Cruz County · Arizona bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.