Thornydale Road
Carrying Thornydale Road over Canada Del Oro Wash
0.3 mi S Jct Ina Rd, Pima, Arizona
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: Thornydale Road
The Thornydale Road bridge in Pima, Arizona carries Thornydale Road over Canada Del Oro Wash. It was built in 1982, making it 44 years old today. It was last reconstructed in 1998, extending its service life. The structure is built primarily of prestressed concrete continuous and spans 4 sections, stretching 98.5 meters (323 feet) end to end. Daily traffic averages 32,162 vehicles, placing it in the heavily-trafficked tier of Arizona bridges. It is owned and maintained by Town/Township 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. All reported major components score above the Poor range. Its NBI inventory load rating is 45.4 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How Thornydale Road compares
Live comparison across Arizona.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1982
- Last Reconstructed
- 1998
- Material
- Prestressed Concrete Continuous
- Number of Spans
- 4
- Structure Length
- 98.5 m (323 ft)
- Deck Width
- 40.5 m (133 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 32,162 vehicles/day
- Structure Number
- 08753
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
How to read this record
This page shows what the last federal inspection recorded, not whether Thornydale 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 Thornydale 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 Thornydale Road?
Thornydale 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 Thornydale Road inspected?
Thornydale 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 32,162 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Thornydale 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 Thornydale Road?
Thornydale Road has an NBI inventory load rating of 45.4 metric tons.
Who is responsible for maintaining Thornydale Road?
Thornydale Road is owned and maintained by Town/Township Highway Agency.
How old is Thornydale Road and does age affect safety?
Thornydale Road was built in 1982, making it 44 years old and last reconstructed in 1998.
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.
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.