Home › Kentucky › Mercer County › Martha Layne Colli over Salt River

Martha Layne Colli over Salt River

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

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

Martha Layne Colli over Salt River in Mercer County, Kentucky, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1965, making it 60 years old at the 2025 inventory.
It carries about 7,450 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 45 of the 76 inventoried bridges in Mercer County rated fair (59.2%); 6 (7.9%) 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 concrete tee beam
Length	about 196 ft
Location	Wbl at Anderson Cl
NBI structure number	084B00014L
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Danville Road over Dry Creek	1952	10,414	Fair
Harrodsburg Bypass over Pioneer Creek	1996	9,565	Fair
Bg-9002 over Salt River	1965	7,450	Fair
127 Bypass South R over Southern RR	1996	4,783	Good
Harrodsburg Bypass over Southern Railroad	1996	4,783	Good
Ky 152 over Salt River	1929	4,500	Fair