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Ky-490 over CSX RR & Roundstone CR

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

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

Ky-490 over CSX RR & Roundstone CR in Rockcastle County, Kentucky, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1983, making it 42 years old at the 2025 inventory.
It carries about 257 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 62 of the 87 inventoried bridges in Rockcastle County rated fair (71.3%); 8 (9.2%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 437 ft
Location	100 East of US 25
NBI structure number	102B00052N
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-75 over Lambert Road	1967	47,638	Fair
I-75 over Clay Lick Branch	1967	47,638	Fair
I-75 over Green Hill Road	2018	47,638	Good
I-75 over US-25	2018	47,638	Good
I-75 over US-25	2020	40,386	Good
I-75 over Flat Gap Road	1967	23,819	Fair