NFA D680
Carrying NFA D680 over MCMILLAND ROAD / I40
NEAR THE SEVIER CO LINE, Knox, Tennessee
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: NFA D680
The NFA D680 bridge in Knox, Tennessee carries NFA D680 over MCMILLAND ROAD / I40. It was built in 1975, making it 51 years old today. The structure is built primarily of concrete continuous. Daily traffic averages 86,972 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. No reported major component scores in the Poor range under the current federal condition thresholds.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How NFA D680 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 How the historical reference is calculated.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
- 1975
- Material
- Concrete Continuous
- Avg Daily Traffic
- 86,972 vehicles/day
- Structure Number
- 47I00400109
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 D680 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 D680 against other structures in Knox 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 D680?
NFA D680 in Knox, Tennessee on the FHWA's 0–9 scale.
How often is NFA D680 inspected?
NFA D680'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 86,972 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NFA D680 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 D680?
An inventory load rating is not recorded for NFA D680.
Who is responsible for maintaining NFA D680?
Ownership is not specified for NFA D680 in the NBI.
How old is NFA D680 and does age affect safety?
NFA D680 was built in 1975, making it 51 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.