FHWA NBI 2024 Inspection record Public-domain dataset

Houghton Road

Carrying Houghton Road over Pantano Wash

0.3 mi N Jct Irvington Rd, Pima, Arizona

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
22 t Inventory load rating

Bridge Snapshot: Houghton Road

The Houghton Road bridge in Pima, Arizona carries Houghton Road over Pantano Wash. It was built in 1982, making it 44 years old today. The structure is built primarily of prestressed concrete continuous and spans 4 sections, stretching 107.9 meters (354 feet) end to end. Daily traffic averages 20,266 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 a deck rating of 6/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 21.8 metric tons.

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

How Houghton Road compares

▼ 25.6
Load rating vs Arizona average (47.4 t)
Bottom 4%
Lower load rating than 96% of Arizona bridges
864
Bridges in Pima · 8 in Poor condition
Houghton Road 21.8 t
Arizona average 47.4 t

Live comparison across Arizona.

Historical Sufficiency Rating

PlainBridge-computed
84.4 / 100 - historical 80–100 band
Structural adequacy /55
43.8
Serviceability /30
29.0
Essentiality /15
11.7
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 How the historical reference is calculated.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

Deck
6/9
Fair (5–6)
Superstructure
7/9
Good (7–9)
Substructure
7/9
Good (7–9)
Inventory Load Rating
21.8 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1982
Material
Prestressed Concrete Continuous
Number of Spans
4
Structure Length
107.9 m (354 ft)
Deck Width
14.3 m (47 ft)
Owner
City/Municipal Highway Agency
Avg Daily Traffic
20,266 vehicles/day
Structure Number
09802

Condition Analysis

  • The deck (driving surface) rates fair at 6/9, minor deterioration that routine maintenance should address.
  • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
  • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.

How to read this record

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

Houghton Road in Pima, Arizona has a deck rating of 6/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.

How often is Houghton Road inspected?

Houghton 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 20,266 vehicles per day.

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

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

Houghton Road has an NBI inventory load rating of 21.8 metric tons.

Who is responsible for maintaining Houghton Road?

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

How old is Houghton Road and does age affect safety?

Houghton Road was built in 1982, making it 44 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.