Snowflake-Concho
Carrying Snowflake-Concho over Hay Hollow Wash
10.6 mi E Jct SR 77, Navajo, Arizona
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: Snowflake-Concho
The Snowflake-Concho bridge in Navajo, Arizona carries Snowflake-Concho over Hay Hollow Wash. It was built in 1980, making it 46 years old today. The structure is built primarily of steel and spans 2 sections, stretching 17.7 meters (58 feet) end to end. Daily traffic averages 620 vehicles, placing it in the lower-traffic tier of Arizona bridges. It is owned and maintained by County 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 89.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How Snowflake-Concho 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 How the historical reference is calculated.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
- 1980
- Material
- Steel
- Number of Spans
- 2
- Structure Length
- 17.7 m (58 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 620 vehicles/day
- Structure Number
- 09737
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 Snowflake-Concho 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 Snowflake-Concho against other structures in Navajo 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 Snowflake-Concho?
Snowflake-Concho in Navajo, Arizona on the FHWA's 0–9 scale.
How often is Snowflake-Concho inspected?
Snowflake-Concho'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 620 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Snowflake-Concho 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 Snowflake-Concho?
Snowflake-Concho has an NBI inventory load rating of 89.8 metric tons.
Who is responsible for maintaining Snowflake-Concho?
Snowflake-Concho is owned and maintained by County Highway Agency.
How old is Snowflake-Concho and does age affect safety?
Snowflake-Concho was built in 1980, making it 46 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.
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.