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Ky-645 over Middle Fork

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

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

Ky-645 over Middle Fork in Martin 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 2004, making it 21 years old at the 2025 inventory.
It carries about 4,537 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 22 of the 70 inventoried bridges in Martin County rated good (31.4%); 10 (14.3%) 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 231 ft
Location	1000 East of Jct Ky 3
NBI structure number	080B00040N
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Ky-40 over Rockcastle Creek	1953	4,804	Poor
Ky-645 over Becca Liz Ln	2005	4,537	Good
Ky-645 over KY-40 & Coldwater Fork	2010	4,537	Good
Ky-645 Ramp Ky-40 over Coldwater Fork	2006	4,537	Good
Ky 40 over Buck Creek	1929	4,308	Good
Ky-908 over Blacklog Fork	1987	3,852	Fair