Bridge conditions in Maricopa County, Arizona
2,854 inventoried bridges · 4 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
4 of the 2,854 bridges the federal inventory lists in Maricopa County are rated poor; the rest split 1,961 good and 889 fair.
- 4 of the 2,854 bridges in Maricopa County, Arizona, are rated in poor condition (0.1%) in the 2025 National Bridge Inventory, as of .
- 1,961 bridges (68.7%) are rated good and 889 (31.1%) fair.
- The median Maricopa County bridge was built in 1991.
- The busiest poor-rated bridge is Shea Boulevard over Indian Bend Wash (built 1976), carrying about 37,601 vehicles a day.
Good 68.7% · Fair 31.1% · Poor 0.1% of 2,854 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 |
|---|---|---|---|
| Shea Boulevard over Indian Bend Wash | 1976 | 37,601 | Poor |
| I-8 EB over Gillespie Canal | 1957 | 6,978 | Poor |
| Irr Bia Rte 11 over Arizona Canal | 1965 | 1,600 | Poor |
| Irr Bia Rte 240 over Wash | 1990 | 566 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 101L over Cave Creek Road | 2001 | 282,818 | Good |
| US 60 over Mesa Drainage Channel | 1977 | 246,297 | Good |
| Sl 202 over Grand Canal | 1990 | 243,128 | Good |
| Sl 202 over 40th Street | 1989 | 243,128 | Fair |
| US 60 over SPRR & S Center St | 1981 | 242,887 | Good |
| SL 202 (Red Mtn) over Indian Bend Wash | 1994 | 236,447 | Good |
| I 10 & Dirtroad over RID Canal & dr. channel | 1984 | 232,893 | Good |
| Horne Street over Drainage Channel | 1980 | 225,171 | Good |
| Stapley Drive over Drainage Channel | 1980 | 225,171 | Good |
| I 10 over Dirt/Gravel Road | 1978 | 222,327 | 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.