Windmill Rd
Carrying Windmill Rd over Wash
0.25 m W of Pima Rd, Maricopa, Arizona
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
Windmill Rd in Maricopa, Arizona sits above 15% of rated Arizona bridges on inventory load rating (32 t), while its 1999 build year is earlier than 35% of Maricopa's recorded-year cohort (2,847 bridges).
Windmill Rd in Maricopa, Arizona is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1999, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure AZ:11293
LATE-CENTURY · CONCRETE · LONG-SPAN-RUN · CULVERT-LED · LOCAL-ADT · STANDARD-LOAD · CAT-GOOD
- LATE-CENTURY 1980–1999
- CONCRETE Concrete
- LONG-SPAN-RUN 5 spans
- CULVERT-LED Culvert-led
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard load
- CAT-GOOD Good
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: Windmill Rd
The Windmill Rd bridge in Maricopa, Arizona carries Windmill Rd over Wash. It was built in 1999, making it 27 years old today. The structure is built primarily of concrete continuous and spans 5 sections, stretching 23.2 meters (76 feet) end to end. Daily traffic averages 110 vehicles, placing it in the lower-traffic tier of Arizona bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. All reported major components score above the Poor range.
How Windmill Rd compares
Age against the county: built in 1999, earlier than 986 of Maricopa's 2,847 bridges with a recorded construction year (35%), against a county median build year of 1991. This is one of the newer structures in its county.
Live comparison across Arizona bridges with a recorded inventory load rating (8,572 of 8,573 rated).
Windmill Rd vs every rated Arizona bridge
Inventory load rating (metric tons), FHWA NBI, this state
32 Top 85% higher than 15% of 8,572 bridges
rated Arizona bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Maricopa inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 2,847 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1999
- Material
- Concrete Continuous
- Number of Spans
- 5
- Structure Length
- 23.2 m (76 ft)
- Deck Width
- 20.4 m (67 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 110 vehicles/day
- Structure Number
- 11293
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether Windmill Rd is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare Windmill Rd against other structures in Maricopa and across Arizona. Arizona bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for Windmill Rd?
Windmill Rd in Maricopa, Arizona on the FHWA's 0–9 scale.
How often is Windmill Rd inspected?
Windmill Rd's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 110 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Windmill Rd is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for Windmill Rd?
Windmill Rd has an NBI inventory load rating of 31.8 metric tons.
Who is responsible for maintaining Windmill Rd?
Windmill Rd is owned and maintained by City/Municipal Highway Agency.
How old is Windmill Rd and does age affect safety?
Windmill Rd was built in 1999, making it 27 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.