I640 LL
Carrying I640 LL over I640-LL (WB) / I275
AT SHARPS GAP EXCH., Knox, Tennessee
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: I640 LL
The I640 LL bridge in Knox, Tennessee carries I640 LL over I640-LL (WB) / I275. It was built in 1960, making it 66 years old today. The structure is built primarily of concrete continuous. Daily traffic averages 63,125 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. All reported major components score above the Poor range.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How I640 LL 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 How the historical reference is calculated.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
- 1960
- Material
- Concrete Continuous
- Avg Daily Traffic
- 63,125 vehicles/day
- Structure Number
- 47I02750020
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 I640 LL 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 I640 LL 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 I640 LL?
I640 LL in Knox, Tennessee on the FHWA's 0–9 scale.
How often is I640 LL inspected?
I640 LL'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 63,125 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I640 LL 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 I640 LL?
An inventory load rating is not recorded for I640 LL.
Who is responsible for maintaining I640 LL?
Ownership is not specified for I640 LL in the NBI.
How old is I640 LL and does age affect safety?
I640 LL was built in 1960, making it 66 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.