163rd Avenue
Carrying 163rd Avenue over HaydenRhodes CAP Aqueduc
5 mi N/ US 60_Grand Ave, Maricopa, Arizona
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
163rd Avenue in Maricopa, Arizona sits above 15% of rated Arizona bridges on inventory load rating (32 t), while its 1979 build year is earlier than 74% of Maricopa's recorded-year cohort (2,847 bridges).
163rd Avenue in Maricopa, Arizona is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1979, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 6. The lowest applicable rating sets the federal condition category, so this Fair 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:08571
INTERSTATE-ERA · PRESTRESS · SINGLE-SPAN · SUB-LED · ARTERIAL-ADT · STANDARD-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- PRESTRESS Prestressed concrete
- SINGLE-SPAN Single span
- SUB-LED Substructure-led
- ARTERIAL-ADT Arterial ADT
- STANDARD-LOAD Standard load
- CAT-FAIR Fair
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: 163rd Avenue
The 163rd Avenue bridge in Maricopa, Arizona carries 163rd Avenue over HaydenRhodes CAP Aqueduc. It was built in 1979, making it 47 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 26.9 meters (88 feet) end to end. Daily traffic averages 2,622 vehicles, placing it in the moderately-trafficked tier of Arizona bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range.
How 163rd Avenue compares
Age against the county: built in 1979, earlier than 2,113 of Maricopa's 2,847 bridges with a recorded construction year (74%), against a county median build year of 1991. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Arizona bridges with a recorded inventory load rating (8,572 of 8,573 rated).
163rd Avenue 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.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
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
- 1979
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 26.9 m (88 ft)
- Deck Width
- 18.2 m (60 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 2,622 vehicles/day
- Structure Number
- 08571
Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
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 163rd Avenue 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 163rd Avenue 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 163rd Avenue?
163rd Avenue in Maricopa, Arizona has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is 163rd Avenue inspected?
163rd Avenue'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 2,622 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. 163rd Avenue is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for 163rd Avenue?
163rd Avenue has an NBI inventory load rating of 31.8 metric tons.
Who is responsible for maintaining 163rd Avenue?
163rd Avenue is owned and maintained by City/Municipal Highway Agency.
How old is 163rd Avenue and does age affect safety?
163rd Avenue was built in 1979, making it 47 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.