Motorists have been warned about likely delays on the A1122 Downham Market bypass near Denver when resurfacing begins in the New Year.
The £435,000 project involves resurfacing the road from the junction with the A10 westwards to the junction with Sovereign Way.
Work starts on Wednesday, January 9, and involves major carriageway resurfacing to repair the damaged existing road surface.
It will take three weeks to complete, subject to suitable weather conditions.
During the work all traffic will be controlled using temporary traffic signals, with a convoy system in place during normal working hours, from 9am to 5pm.
Vehicle access to businesses and properties within the limits of the works will be maintained.
The work will be carried out by Norfolk County Council’s community and environmental services department and its contractors.
Funding for the scheme comes from the extra £12.69m the county council received from the government to spend on road maintenance.
Up-to-date information about roadworks in Norfolk is available on the county council’s website at www.norfolk.gov.uk/roadworks