Arizona has 8,587 bridges on public roads, according to the FHWA National Bridge Inventory. Of those, 95 are rated in poor condition — a rate of 1.1% — below the national average of 6.7%. Another 3,062 are in fair condition, while 5,430 are in good condition.
Use the interactive Arizona bridge map below to explore every bridge, color-coded by condition. Click any cluster to zoom in, then click an individual bridge for its route, structural ratings, year built, daily traffic, and last inspection date. Filter by condition using the checkboxes, or switch to satellite view to see bridges from above. For a national comparison, see the full US bridges interactive map.
Arizona Bridge Conditions by the Numbers
- 8,587 total bridges on public roads in Arizona
- 95 in poor condition (1.1%) — below the national average of 6.7%
- 3,062 in fair condition (35.7%)
- 5,430 in good condition (63.2%)
- Oldest bridge in the inventory: Forest 80, built 1900
Oldest Bridges in Arizona
The oldest bridges in Arizona date back to the 1900s. The ten oldest Arizona bridges still in the national inventory:
| Route / Facility | Crosses | Year Built | Condition |
|---|---|---|---|
| Forest 80 | Fish Creek | 1900 | Good |
| SR 179 NB | Wash | 1900 | Fair |
| Pearce Rd | Middle March Creek | 1900 | Fair |
| Solomon Road | Stockton Drain | 1900 | Fair |
| Buena Vista Road | San Jose Canal | 1900 | Fair |
| Ash Creek Road | Ash Creek | 1900 | Fair |
| Layton Rd | Union Canal | 1900 | Poor |
| W 8th Street | Union Canal | 1900 | Fair |
| Hollywood Road | Stockton Drain | 1900 | Fair |
| Cosper Loop | Rocky John Canyon | 1900 | Fair |
Most Concerning Arizona Bridges: Poor Condition and High Traffic
The bridges of greatest concern combine a poor structural rating with high daily traffic loads. These Arizona bridges carry the most vehicles per day while rated in poor condition:
| Route / Facility | Crosses | Daily Traffic | Year Built | Deck | Superstructure | Substructure |
|---|---|---|---|---|---|---|
| I 10; WB | FAS 317; Cortero Rd | 56,965 vehicles/day | 1966 | Satisfactory (6) | Poor (4) | Good (7) |
| 22nd Street | SPRR; Aviation Hwy | 39,799 vehicles/day | 1966 | Poor (4) | Good (7) | Satisfactory (6) |
| Shea Boulevard | Indian Bend Wash | 37,601 vehicles/day | 1976 | Poor (4) | Poor (4) | Satisfactory (6) |
| I 15 | Virgin River | 32,192 vehicles/day | 1967 | Good (7) | Poor (4) | Good (7) |
| I-40 WB | SB 40 | 21,131 vehicles/day | 1969 | Fair (5) | Poor (4) | Fair (5) |
How Arizona Bridge Conditions Are Assessed
Bridge condition in the NBI is determined by ratings of three structural components — deck, superstructure, and substructure — on a scale of 0 (failed) to 9 (excellent). A bridge is classified as good when all three components score 7 or above. It is classified as poor when any component scores 4 or below. Ratings of 5 or 6 on any component with no component below 5 result in a fair classification. ADOT coordinates inspections across Arizona in line with FHWA standards, with most bridges inspected on a 24-month cycle.
Frequently Asked Questions
How many bridges in Arizona are in poor condition?
95 of Arizona’s 8,587 bridges are currently rated in poor condition by the FHWA National Bridge Inventory, a rate of 1.1%.
What is the oldest bridge in
The oldest bridge recorded in Arizona’s NBI inventory is Forest 80, built in 1900.
What does a poor bridge rating mean?
A poor rating means at least one of a bridge’s three key structural components — deck, superstructure, or substructure — has been rated 4 or below on the NBI 0-9 scale. A rating of 4 is defined as “poor condition,” and ratings of 3, 2, 1, or 0 indicate increasingly serious deterioration. Poor-rated bridges are not necessarily unsafe or closed, but they require priority attention and monitoring.
View all 624,000+ US bridges on the national interactive map
Compare with neighboring states: California bridges map | Colorado bridges map | Nevada bridges map | New Mexico bridges map | Utah bridges map
