Bridge conditions in Coconino County, Arizona
406 inventoried bridges · 4 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Coconino County tracks close to typical: 4 of its 406 inventoried bridges (1.0%) are rated poor, against a national rate of about 7%.
- 4 of the 406 bridges in Coconino County, Arizona, are rated in poor condition (1.0%) in the 2025 National Bridge Inventory, as of .
- 210 bridges (51.7%) are rated good and 192 (47.3%) fair.
- The median Coconino County bridge was built in 1966.
- The busiest poor-rated bridge is SR 64 over Red Lake Wash (built 1936), carrying about 4,618 vehicles a day.
Good 51.7% · Fair 47.3% · Poor 1.0% of 406 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 |
|---|---|---|---|
| SR 64 over Red Lake Wash | 1936 | 4,618 | Poor |
| Parks-Wgn Wheel Rd over Volunteer Wash | 1929 | 135 | Poor |
| Irr Bia Rte N6910 over San Francisco Wash | 1978 | 92 | Poor |
| Irr Bia Rte N6731 over Moenkopi Wash | 1915 | 50 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 89A Spur over Sinclair Wash | 1967 | 33,785 | Good |
| I 17 S 89A over Wash | 1940 | 33,483 | Good |
| SB 40 over Rio De Flag | 2021 | 33,068 | Good |
| SR89A over McConnel Drive | 1967 | 32,497 | Good |
| I-17 over I40 ramp E- N | 2000 | 32,232 | Fair |
| Country Club Road over Old 66 Industrial Dr/RR | 2007 | 31,850 | Good |
| I 40 EB over Butler Avenue | 1988 | 31,446 | Fair |
| I 40 WB over Butler Avenue | 1988 | 30,576 | Fair |
| I 40; EB over I 17 | 1966 | 26,188 | Fair |
| 4th St over I 40; EB | 2020 | 25,431 | 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.