FHWA NBI 2024 Inspection record Public-domain dataset

McDowell Road

Carrying McDowell Road over Old Crosscut Canal

McDowell Rd & Crosscut Cn, Maricopa, Arizona

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
95 t Inventory load rating

Bridge Snapshot: McDowell Road

The McDowell Road bridge in Maricopa, Arizona carries McDowell Road over Old Crosscut Canal. It was built in 1940, making it 86 years old today. It was last reconstructed in 1991, extending its service life. The structure is built primarily of concrete continuous and spans 2 sections, stretching 7.9 meters (26 feet) end to end. Daily traffic averages 30,155 vehicles, placing it in the heavily-trafficked 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. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 94.7 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How McDowell Road compares

▲ 47.3
Load rating vs Arizona average (47.4 t)
Top 2%
Higher load rating than 98% of Arizona bridges
2,203
Bridges in Maricopa · 3 in Poor condition
McDowell Road 94.7 t
Arizona average 47.4 t

Live comparison across Arizona.

Historical Sufficiency Rating

PlainBridge-computed
79.9 / 100 - historical 50–79.9 band
Structural adequacy /55
55.0
Serviceability /30
15.0
Essentiality /15
9.9
Special reductions
0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Culvert
7/9
Good (7–9)
Inventory Load Rating
94.7 t
NBI inventory level (metric tons)
Overall Condition
Good

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1940
Last Reconstructed
1991
Material
Concrete Continuous
Number of Spans
2
Structure Length
7.9 m (26 ft)
Deck Width
37.8 m (124 ft)
Owner
City/Municipal Highway Agency
Avg Daily Traffic
30,155 vehicles/day
Structure Number
10109

How to read this record

This page shows what the last federal inspection recorded, not whether McDowell Road 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 McDowell Road 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 McDowell Road?

McDowell Road in Maricopa, Arizona on the FHWA's 0–9 scale.

How often is McDowell Road inspected?

McDowell Road'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 30,155 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. McDowell Road 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 McDowell Road?

McDowell Road has an NBI inventory load rating of 94.7 metric tons.

Who is responsible for maintaining McDowell Road?

McDowell Road is owned and maintained by City/Municipal Highway Agency.

How old is McDowell Road and does age affect safety?

McDowell Road was built in 1940, making it 86 years old and last reconstructed in 1991.

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.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.