Arizona bridge conditions
8,587 inventoried bridges · 95 rated poor · county by county
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 95 of Arizona's 8,587 inventoried bridges are rated in poor condition (1.1%) in the 2025 National Bridge Inventory, as of .
- 5,430 bridges (63.2%) are rated good and 3,062 (35.7%) fair.
- The national poor rate is about 6.7%; Arizona is at or below it (see all states ranked).
- The busiest poor-rated bridge in the state is I 10; WB over FAS 317; Cortero Rd in Pima County, carrying about 56,965 vehicles a day.
By the measure that matters most - the most traffic on a poor rating - it is I 10; WB over FAS 317; Cortero Rd in Pima County, built 1966, carrying about 56,965 vehicles a day. That is a repair-priority flag, not a collapse warning: what a poor rating does and does not mean. See the worst bridge in every state.
Good 63.2% · Fair 35.7% · Poor 1.1% of 8,587 bridges
Bridge conditions by county
Sorted by the number of poor-rated bridges. Click any county for its full bridge list.
| County | Bridges | Rated poor | Poor % |
|---|---|---|---|
| Apache County | 258 | 16 | 6.2% |
| Pima County | 1,154 | 11 | 1.0% |
| La Paz County | 306 | 10 | 3.3% |
| Cochise County | 501 | 10 | 2.0% |
| Pinal County | 717 | 7 | 1.0% |
| Graham County | 181 | 7 | 3.9% |
| Yuma County | 262 | 6 | 2.3% |
| Navajo County | 278 | 6 | 2.2% |
| Maricopa County | 2,854 | 4 | 0.1% |
| Mohave County | 640 | 4 | 0.6% |
| Gila County | 259 | 4 | 1.5% |
| Coconino County | 406 | 4 | 1.0% |
| Greenlee County | 91 | 3 | 3.3% |
| Yavapai County | 543 | 2 | 0.4% |
| Santa Cruz County | 137 | 1 | 0.7% |
The 25 busiest poor-rated bridges in Arizona
Frequently asked questions
How many bridges in Arizona are in poor condition?
95 of Arizona's 8,587 inventoried highway bridges are rated in poor condition (1.1%) in the 2025 National Bridge Inventory. 'Poor' is FHWA's classification for a bridge whose deck, superstructure, or substructure is rated 4 or lower on the 0-9 scale; it was formerly called 'structurally deficient'.
Are the poor-rated bridges in Arizona safe to drive on?
A poor rating flags advanced deterioration that needs repair or close monitoring; it does not by itself mean a bridge is unsafe. Bridges judged unsafe are closed or restricted to lighter loads by the owner. Inspections continue on all open bridges, generally at least every 24 months under the National Bridge Inspection Standards.
Source: FHWA National Bridge Inventory, 2025 vintage, reported by the Arizona DOT.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.