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Ky-3 Nc over Middle Frk Rockcastle Ck

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

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

Ky-3 Nc over Middle Frk Rockcastle Ck in Martin County, Kentucky, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1987, making it 38 years old at the 2025 inventory.
It carries about 1,527 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 38 of the 70 inventoried bridges in Martin County rated fair (54.3%); 10 (14.3%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Continuous prestressed concrete stringer or multi-beam girder
Length	about 161 ft
Location	0.3 MI S of KY 645
NBI structure number	080B00023L
Condition class	Fair

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 Middle Fork	2004	4,537	Good
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