NFA 1880 (SA 6320)
Carrying NFA 1880 (SA 6320) over TROUGH SPRINGS RD. / I24
NEAR SANGO, Montgomery, Tennessee
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: NFA 1880 (SA 6320)
The NFA 1880 (SA 6320) bridge in Montgomery, Tennessee carries NFA 1880 (SA 6320) over TROUGH SPRINGS RD. / I24. It was built in 1973, making it 53 years old today. The structure is built primarily of concrete continuous. Daily traffic averages 66,659 vehicles, placing it in the heavily-trafficked tier of Tennessee bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. None of this bridge's reported major components fall into the Poor condition range.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How NFA 1880 (SA 6320) compares
Live comparison across Tennessee.
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 How the historical reference is calculated.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
- 1973
- Material
- Concrete Continuous
- Avg Daily Traffic
- 66,659 vehicles/day
- Structure Number
- 63I00240017
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 NFA 1880 (SA 6320) 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 NFA 1880 (SA 6320) against other structures in Montgomery and across Tennessee. Tennessee 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 NFA 1880 (SA 6320)?
NFA 1880 (SA 6320) in Montgomery, Tennessee on the FHWA's 0–9 scale.
How often is NFA 1880 (SA 6320) inspected?
NFA 1880 (SA 6320)'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 66,659 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NFA 1880 (SA 6320) is currently shown as unrated condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for NFA 1880 (SA 6320)?
An inventory load rating is not recorded for NFA 1880 (SA 6320).
Who is responsible for maintaining NFA 1880 (SA 6320)?
Ownership is not specified for NFA 1880 (SA 6320) in the NBI.
How old is NFA 1880 (SA 6320) and does age affect safety?
NFA 1880 (SA 6320) was built in 1973, making it 53 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.