KY-3170
Carrying KY-3170 over N.FK LICKING RIVER
.13 MI W OF JCT NEW KY 11, Mason, Kentucky
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: KY-3170
The KY-3170 bridge in Mason, Kentucky carries KY-3170 over N.FK LICKING RIVER. It was built in 1941, making it 85 years old today. The structure is built primarily of concrete and spans 4 sections, stretching 58.5 meters (192 feet) end to end. Daily traffic averages 292 vehicles, placing it in the lower-traffic tier of Kentucky bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 5/9, 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 25.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How KY-3170 compares
Live comparison across Kentucky.
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 How the historical reference is calculated.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
- 1941
- Material
- Concrete
- Number of Spans
- 4
- Structure Length
- 58.5 m (192 ft)
- Deck Width
- 9.4 m (31 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 292 vehicles/day
- Structure Number
- 081B00004N
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • At 5/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • At 4/9, the substructure (piers and abutments) is in poor shape, with advanced wear flagged for priority repair.
How to read this record
KY-3170 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 KY-3170 against other structures in Mason 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 KY-3170?
KY-3170 in Mason, Kentucky has a deck rating of 5/9, superstructure rating of 5/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is KY-3170 inspected?
KY-3170'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 292 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. KY-3170 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 KY-3170?
KY-3170 has an NBI inventory load rating of 25.7 metric tons.
Who is responsible for maintaining KY-3170?
KY-3170 is owned and maintained by State Highway Agency.
How old is KY-3170 and does age affect safety?
KY-3170 was built in 1941, making it 85 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.