4th Avenue
Carrying 4th Avenue over High School Wash
250 ft S of 7th St, Pima, Arizona
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: 4th Avenue
The 4th Avenue bridge in Pima, Arizona carries 4th Avenue over High School Wash. It was built in 1910, making it 116 years old today. It was last reconstructed in 2012, extending its service life. The structure is built primarily of concrete continuous and spans 3 sections, stretching 6.7 meters (22 feet) end to end. Daily traffic averages 7,162 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 culvert at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 29.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How 4th Avenue 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 How the historical reference is calculated.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
- 1910
- Last Reconstructed
- 2012
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 6.7 m (22 ft)
- Deck Width
- 24.3 m (80 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 7,162 vehicles/day
- Structure Number
- 08936
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 4th 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 4th Avenue 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 4th Avenue?
4th Avenue in Pima, Arizona on the FHWA's 0–9 scale.
How often is 4th Avenue inspected?
4th 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 7,162 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. 4th 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 4th Avenue?
4th Avenue has an NBI inventory load rating of 29.0 metric tons.
Who is responsible for maintaining 4th Avenue?
4th Avenue is owned and maintained by City/Municipal Highway Agency.
How old is 4th Avenue and does age affect safety?
4th Avenue was built in 1910, making it 116 years old and last reconstructed in 2012.
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.