FHWA NBI 2024 Inspection record Public-domain dataset

Carson Ave

Carrying Carson Ave over Wash

0.2 mi N Escalante Rd, Pima, Arizona

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
32 t Inventory load rating

Bridge Snapshot: Carson Ave

The Carson Ave bridge in Pima, Arizona carries Carson Ave over Wash. It was built in 1981, making it 45 years old today. The structure is built primarily of concrete continuous and spans 2 sections, stretching 6.4 meters (21 feet) end to end. Daily traffic averages 400 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. Its NBI inventory load rating is 31.8 metric tons.

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

How Carson Ave compares

▼ 15.6
Load rating vs Arizona average (47.4 t)
Bottom 17%
Lower load rating than 83% of Arizona bridges
864
Bridges in Pima · 8 in Poor condition
Carson Ave 31.8 t
Arizona average 47.4 t

Live comparison across Arizona.

Historical Sufficiency Rating

PlainBridge-computed
99.8 / 100 - historical 80–100 band
Structural adequacy /55
54.8
Serviceability /30
30.0
Essentiality /15
15.0
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 How the historical reference is calculated.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
31.8 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
1981
Material
Concrete Continuous
Number of Spans
2
Structure Length
6.4 m (21 ft)
Deck Width
15.8 m (52 ft)
Owner
City/Municipal Highway Agency
Avg Daily Traffic
400 vehicles/day
Structure Number
08801

How to read this record

This page shows what the last federal inspection recorded, not whether Carson Ave 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 Carson Ave against other structures in Pima 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 Carson Ave?

Carson Ave in Pima, Arizona on the FHWA's 0–9 scale.

How often is Carson Ave inspected?

Carson Ave'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 400 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. Carson Ave 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 Carson Ave?

Carson Ave has an NBI inventory load rating of 31.8 metric tons.

Who is responsible for maintaining Carson Ave?

Carson Ave is owned and maintained by City/Municipal Highway Agency.

How old is Carson Ave and does age affect safety?

Carson Ave was built in 1981, making it 45 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.

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.