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Ashby Fork Rd over Ashby Fork

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

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

Ashby Fork Rd over Ashby Fork 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 2009, making it 16 years old at the 2025 inventory.
It carries about 253 vehicles a day (traffic count year 2011).
Its listed owner is the county 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	Prestressed concrete multiple box beam
Length	about 45 ft
Location	1 Mi SE of Jct Ky 20
NBI structure number	008C00072N
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