FHWA NBI 2024 Inspection record Public-domain dataset

BOONE ROAD

Carrying BOONE ROAD over TRIB. TO KY. RIVER

1MI SE OF W-JCT KY 36, Carroll, Kentucky

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
58 t Inventory load rating

Bridge Snapshot: BOONE ROAD

The BOONE ROAD bridge in Carroll, Kentucky carries BOONE ROAD over TRIB. TO KY. RIVER. It was built in 1968, making it 58 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 7.9 meters (26 feet) end to end. Daily traffic averages 208 vehicles, placing it in the lower-traffic tier of Kentucky bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, substructure at 4/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed. Its NBI inventory load rating is 57.7 metric tons.

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

How BOONE ROAD compares

▲ 18.5
Load rating vs Kentucky average (39.2 t)
Top 10%
Higher load rating than 90% of Kentucky bridges
68
Bridges in Carroll · 7 in Poor condition
BOONE ROAD 57.7 t
Kentucky average 39.2 t

Live comparison across Kentucky.

Historical Sufficiency Rating

PlainBridge-computed
48.8 / 100 - historical 20–49.9 band
Structural adequacy /55
30.0
Serviceability /30
7.0
Essentiality /15
14.8
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 How the historical reference is calculated.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

Deck
6/9
Fair (5–6)
Superstructure
6/9
Fair (5–6)
Substructure
4/9
Poor (1–4)
Inventory Load Rating
57.7 t
NBI inventory level (metric tons)
Overall Condition
Poor

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

Structural Details

Year Built
1968
Material
Prestressed Concrete
Number of Spans
1
Structure Length
7.9 m (26 ft)
Deck Width
6.6 m (22 ft)
Owner
County Highway Agency
Avg Daily Traffic
208 vehicles/day
Structure Number
021C00006N

Condition Analysis

  • The deck (driving surface) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
  • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
  • The substructure (piers and abutments) is in poor condition (4/9), showing advanced deterioration that may require priority repair.

How to read this record

BOONE ROAD is in the federal Poor condition category. That is a component-based result, not a closure order.

  • NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
  • Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
  • Compare BOONE ROAD against other structures in Carroll and across Kentucky. Kentucky 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 BOONE ROAD?

BOONE ROAD in Carroll, Kentucky has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.

How often is BOONE ROAD inspected?

BOONE ROAD'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 208 vehicles per day.

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

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

What is the inventory load rating for BOONE ROAD?

BOONE ROAD has an NBI inventory load rating of 57.7 metric tons.

Who is responsible for maintaining BOONE ROAD?

BOONE ROAD is owned and maintained by County Highway Agency.

How old is BOONE ROAD and does age affect safety?

BOONE ROAD was built in 1968, making it 58 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.