Home › Kentucky › Clay County › US-421 over Red Bird River

US-421 over Red Bird River

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

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

US-421 over Red Bird River in Clay 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 1986, making it 39 years old at the 2025 inventory.
It carries about 1,224 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 107 of the 165 inventoried bridges in Clay County rated fair (64.8%); 23 (13.9%) 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 251 ft
Location	14.35 Mi S. Jct Ky 80
NBI structure number	026B00104N
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US-421 over Little Goose Creek	1993	13,190	Fair
Ky-80 over Hal Rogers Parkway	1971	11,538	Fair
US-421 over Goose Creek	1983	8,691	Fair
Hr-9006 over LITTLE GOOSE CRK & R	1970	8,477	Fair
Hr-9006 over Cheek Rd	1970	8,477	Fair
Hr-9006 over Urban Road	1970	8,477	Fair