FHWA NBI 2024 Inspection record Public-domain dataset

I81 LL

Carrying I81 LL over I81 LF LN

BTWN SR36 & I181 EXITS, Sullivan, Tennessee

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Unknown

Bridge Snapshot: I81 LL

The I81 LL bridge in Sullivan, Tennessee carries I81 LL over I81 LF LN. It was built in 1976, making it 50 years old today. The structure is built primarily of prestressed concrete continuous. Daily traffic averages 2,726 vehicles, placing it in the moderately-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 I81 LL compares

370
Bridges in Sullivan · 9 in Poor condition

Live comparison across Tennessee.

Historical Sufficiency Rating

PlainBridge-computed
89.5 / 100 - historical 80–100 band
Structural adequacy /55
49.9
Serviceability /30
30.0
Essentiality /15
9.6
Special reductions
0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Overall Condition
Unrated

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1976
Material
Prestressed Concrete Continuous
Avg Daily Traffic
2,726 vehicles/day
Structure Number
82I00810012

How to read this record

This page shows what the last federal inspection recorded, not whether I81 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 I81 LL against other structures in Sullivan 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 I81 LL?

I81 LL in Sullivan, Tennessee on the FHWA's 0–9 scale.

How often is I81 LL inspected?

I81 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 2,726 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. I81 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 I81 LL?

An inventory load rating is not recorded for I81 LL.

Who is responsible for maintaining I81 LL?

Ownership is not specified for I81 LL in the NBI.

How old is I81 LL and does age affect safety?

I81 LL was built in 1976, making it 50 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.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

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.