The recent bad weather means contractors will need to work on the road resurfacing programme at Ring Road St Mark's and Great Brickkiln Street for up to 3 extra nights from Monday 16 to Wednesday 18 June.
It was originally anticipated that this phase of improvements would be completed by Saturday 14 June.
Closures will be implemented between 7pm and 6am and diversions will be in place. Pedestrians will still be able to use the roads while vehicle access to frontages will be maintained where possible.
This is part of the overall highway improvement scheme to support the new Sainsbury's development.
Sainsbury's are funding the whole road improvement project while the construction of the new Raglan Street store takes shape.
Tim Johnson, Wolverhampton City Council's Strategic Director for Education and Enterprise, said: "Contractors have been working hard to complete this phase and night time closures were implemented to keep disruption down to a minimum.
"Unfortunately, the recent stormy weather we have had has affected the programme and it will now not be completed as first anticipated.
"The contractors hope to finish this work as soon as possible but drivers are advised that up to 3 further night time closures could be required.
"The new store represents a significant investment in the city, bringing scores of new jobs and providing a shot in the arm for the local economy."
- released: Wednesday 11 June, 2014