Norfolk County Council plans to close Kerdiston Road from its junction with B1145 Station Road to its junction with Silver End on Friday 1 June.
The temporary road closure is to allow BT Openreach works in an underground structure and is expected to be completed within the day.
The alternative route is via Kerdiston Road, Smugglers Lane, B1145 Dereham Road/ Station Road.
In the event of the start date being delayed the new start date will be displayed on site in advance.
- For further information contact Martin Dixon, Community and Environmental Services, Norfolk County Council on 0344 800 8020.