WEST PERIMETER RD
Carrying WEST PERIMETER RD over CASEY CREEK
300-618, Trigg, Kentucky
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: WEST PERIMETER RD
The WEST PERIMETER RD bridge in Trigg, Kentucky carries WEST PERIMETER RD over CASEY CREEK. It was built in 2017, making it 9 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 15.5 meters (51 feet) end to end. Daily traffic averages 300 vehicles, placing it in the lower-traffic tier of Kentucky bridges. It is owned and maintained by NASA.
The latest FHWA inspection records show a deck rating of 8/9, superstructure at 8/9, substructure at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 32.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How WEST PERIMETER RD 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 How the historical reference is calculated.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
- 2017
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 15.5 m (51 ft)
- Deck Width
- 10.7 m (35 ft)
- Owner
- NASA
- Avg Daily Traffic
- 300 vehicles/day
- Structure Number
- DAPFORCAK000003
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 8/9, the deck (driving surface) is in good shape and shows no significant wear.
- • The superstructure (beams and supports above the deck) is in good condition (8/9), showing no significant deterioration.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
How to read this record
This page shows what the last federal inspection recorded, not whether WEST PERIMETER RD 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 WEST PERIMETER RD 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 WEST PERIMETER RD?
WEST PERIMETER RD in Trigg, Kentucky has a deck rating of 8/9, superstructure rating of 8/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is WEST PERIMETER RD inspected?
WEST PERIMETER RD'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 300 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. WEST PERIMETER RD is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for WEST PERIMETER RD?
WEST PERIMETER RD has an NBI inventory load rating of 32.7 metric tons.
Who is responsible for maintaining WEST PERIMETER RD?
WEST PERIMETER RD is owned and maintained by NASA.
How old is WEST PERIMETER RD and does age affect safety?
WEST PERIMETER RD was built in 2017, making it 9 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.