Bridge conditions in Pima County, Arizona
1,154 inventoried bridges · 11 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
11 of the 1,154 bridges the federal inventory lists in Pima County are rated poor; the rest split 782 good and 361 fair.
- 11 of the 1,154 bridges in Pima County, Arizona, are rated in poor condition (1.0%) in the 2025 National Bridge Inventory, as of .
- 782 bridges (67.8%) are rated good and 361 (31.3%) fair.
- The median Pima County bridge was built in 1981.
- The busiest poor-rated bridge is I 10; WB over FAS 317; Cortero Rd (built 1966), carrying about 56,965 vehicles a day.
Good 67.8% · Fair 31.3% · Poor 1.0% of 1,154 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 10; WB over FAS 317; Cortero Rd | 1966 | 56,965 | Poor |
| 22nd Street over SPRR; Aviation Hwy | 1966 | 39,799 | Poor |
| Trico Road over Brawley Wash | 1960 | 3,531 | Poor |
| Trico-Marana Road over Santa Cruz River | 1959 | 2,718 | Poor |
| Madera Canyon Rd over Medium Wash | 1935 | 1,200 | Poor |
| Madera Canyon Rd over Florida Canyon Wash | 1935 | 1,200 | Poor |
| Trico Rd over Santa Cruz River | 1962 | 871 | Poor |
| Silverbell Rd over Blanco Wash | 1935 | 816 | Poor |
| Irr Bia Rte 161 over Wash | 1998 | 250 | Poor |
| Telera St (Ajo) over Ajo Wash | 1935 | 200 | Poor |
| Control Road over Gibb Wash | 1950 | 85 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ramp to I-10 NW over I 10 Mainline | 2003 | 281,068 | Fair |
| I-10 EB & WB over Cushing Street | 2009 | 209,279 | Good |
| I-10 EB & WB over 18th Street | 2009 | 209,269 | Good |
| I-10 EB & WB over Congress Street | 2009 | 195,388 | Good |
| I-10 over St. Marys Rd | 2009 | 195,068 | Fair |
| I-10 over Speedway Blvd. | 2009 | 195,068 | Good |
| I-10 EB & WB over Grant Road | 2009 | 192,645 | Good |
| I-10 EB & WB over 22nd Street | 2009 | 184,387 | Good |
| I-10 over Wash | 1950 | 175,000 | Good |
| I-10 over Bronx Wash | 2008 | 173,000 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Arizona: Arizona bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.