LBL ROAD 351
Carrying LBL ROAD 351 over JONES CREEK
LBL, Trigg, Kentucky
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
LBL ROAD 351 in Trigg, Kentucky sits above 3% of rated Kentucky bridges on inventory load rating (13 t), while its 1964 build year is earlier than 70% of Trigg's recorded-year cohort (109 bridges).
LBL ROAD 351 in Trigg, Kentucky is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1964, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 2. The lowest applicable rating sets the federal condition category, so this Poor result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure KY:086000000003019
INTERSTATE-ERA · STEEL · MULTI-SPAN · SUB-LED · TRACE-ADT · LIGHT-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- MULTI-SPAN 2 spans
- SUB-LED Substructure-led
- TRACE-ADT Trace ADT
- LIGHT-LOAD Light load
- CAT-POOR Poor
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: LBL ROAD 351
The LBL ROAD 351 bridge in Trigg, Kentucky carries LBL ROAD 351 over JONES CREEK. It was built in 1964, making it 62 years old today. The structure is built primarily of steel continuous and spans 2 sections, stretching 12.2 meters (40 feet) end to end. Daily traffic averages 20 vehicles, placing it in the lower-traffic tier of Kentucky bridges. It is owned and maintained by U.S. Forest Service.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 5/9, substructure at 2/9. The weakest component sits in critical condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order.
How LBL ROAD 351 compares
Age against the county: built in 1964, earlier than 76 of Trigg's 109 bridges with a recorded construction year (70%), against a county median build year of 1980. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Kentucky bridges with a recorded inventory load rating (14,532 of 14,548 rated).
LBL ROAD 351 vs every rated Kentucky bridge
Inventory load rating (metric tons), FHWA NBI, this state
13 Top 97% higher than 3% of 14,532 bridges
rated Kentucky bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Trigg inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 109 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1964
- Material
- Steel Continuous
- Number of Spans
- 2
- Structure Length
- 12.2 m (40 ft)
- Deck Width
- 6.7 m (22 ft)
- Owner
- U.S. Forest Service
- Avg Daily Traffic
- 20 vehicles/day
- Structure Number
- 086000000003019
Condition Analysis
- • The deck (driving surface) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
- • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates critical at 2/9, with severe deterioration on the latest inspection.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
LBL ROAD 351 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 LBL ROAD 351 against other structures in Trigg 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 LBL ROAD 351?
LBL ROAD 351 in Trigg, Kentucky has a deck rating of 5/9, superstructure rating of 5/9, and substructure rating of 2/9 on the FHWA's 0–9 scale.
How often is LBL ROAD 351 inspected?
LBL ROAD 351'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 20 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. LBL ROAD 351 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 LBL ROAD 351?
LBL ROAD 351 has an NBI inventory load rating of 13.0 metric tons.
Who is responsible for maintaining LBL ROAD 351?
LBL ROAD 351 is owned and maintained by U.S. Forest Service.
How old is LBL ROAD 351 and does age affect safety?
LBL ROAD 351 was built in 1964, making it 62 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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.