FHWA NBI 2024 Inspection record Public-domain dataset

NFA 1777

Carrying NFA 1777 over LAGOON BRANCH

1 M. SE. LOBELVILLE., Perry, Tennessee

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
32 t Inventory load rating

Bridge Snapshot: NFA 1777

The NFA 1777 bridge in Perry, Tennessee carries NFA 1777 over LAGOON BRANCH. It was built in 1972, making it 54 years old today. The structure is built primarily of concrete continuous and spans 2 sections, stretching 10.7 meters (35 feet) end to end. Daily traffic averages 473 vehicles, placing it in the lower-traffic tier of Tennessee bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show culvert at 5/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 32.4 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How NFA 1777 compares

▲ 2.9
Load rating vs Tennessee average (29.5 t)
Bottom 39%
Lower load rating than 61% of Tennessee bridges
153
Bridges in Perry · 2 in Poor condition
NFA 1777 32.4 t
Tennessee average 29.5 t

Live comparison across Tennessee.

Historical Sufficiency Rating

PlainBridge-computed
66.4 / 100 - historical 50–79.9 band
Structural adequacy /55
45.0
Serviceability /30
10.0
Essentiality /15
14.4
Special reductions
−3.0

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 How the historical reference is calculated.

Condition Ratings

Culvert
5/9
Fair (5–6)
Inventory Load Rating
32.4 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1972
Material
Concrete Continuous
Number of Spans
2
Structure Length
10.7 m (35 ft)
Deck Width
7.0 m (23 ft)
Owner
County Highway Agency
Avg Daily Traffic
473 vehicles/day
Structure Number
68017770003

How to read this record

This page shows what the last federal inspection recorded, not whether NFA 1777 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 1777 against other structures in Perry 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 1777?

NFA 1777 in Perry, Tennessee on the FHWA's 0–9 scale.

How often is NFA 1777 inspected?

NFA 1777'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 473 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. NFA 1777 is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for NFA 1777?

NFA 1777 has an NBI inventory load rating of 32.4 metric tons.

Who is responsible for maintaining NFA 1777?

NFA 1777 is owned and maintained by County Highway Agency.

How old is NFA 1777 and does age affect safety?

NFA 1777 was built in 1972, making it 54 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.