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Ky-338 over Big Bone Creek

Boone County, Kentucky · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Ky-338 over Big Bone Creek in Boone County, Kentucky, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1996, making it 29 years old at the 2025 inventory.
It carries about 1,473 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 57 of the 139 inventoried bridges in Boone County rated good (41.0%); 8 (5.8%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous prestressed concrete stringer or multi-beam girder
Length	about 145 ft
Location	1.7 Mi.w. Jct US 62
NBI structure number	008B00083N
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the Kentucky department of transportation.

Bridge	Built	Vehicles/day	Condition
I-75 over Ky 18 Ramp	1990	140,378	Fair
I-75 Ramp over West Rmp KY18 to I75SB	1990	140,378	Fair
I-75 over Chambers Lane	1960	112,428	Fair
I-75 Nc over Turfway Road (ky 1017)	1960	90,720	Fair
I-75 over Turfway Road (ky 1017)	1960	90,720	Fair
I-75 Nc over Ky 536 (mt Zion Rd)	1992	70,784	Fair