The extended closure will facilitate replacement of the bridge or bridges over a slew next to the Tradewater River.
The road could be closed for three months or more.
Traffic will have to find a suitable detour, which could create some hardships for work commuters, farmers and commercial traffic.
Traffic surveys indicate that between 500 and 600 vehicles travel along that KY 120 route on an average day. The project will cost $727,224 and will be done by bridge builders Cambry Contracting.