Work begins on Monday, August 22, on resurfacing of the London Road in Lynn, between the South Gates and Railway Road.
The works, which Norfolk Council Council said will cost £30,000, will be carried out overnight and will take three nights subject to the weather.
The surface treatment process will extend the life of the existing asphalt surface and will defer the need to use the normal surface dressing process for a few years.
A temporary one-way system will be used to control traffic. Inbound traffic will use London Road as normal, however all outbound traffic will be diverted via A148 Railway Road, Littleport Street, Gaywood Road and B1144 Tennyson Avenue between 7 pm and 7am.
All traffic exiting via any side road onto London Road / St James Road will also be required to follow the temporary diversion.
Access to businesses and properties will be maintained.
Overnight work will begin on Wednesday, August 24, to complete surface treatment maintenance previously started on A1078 Edward Benefer Way, Lynn northwards from the junction with Estuary Road through to Bergen Way.
It will take two nights and temporary traffic signals will control traffic during the works.