A main route into Norwich is to close each day for resurfacing work.
The closure of Ketts Hill, from 0730 BST to 1900 BST, started earlier and is expected to last ten working days, Norwich City Council said.
The closure will be in place between the Bishop Bridge Road roundabout and the junction of Belsize Road, where Ketts Hill becomes Plumstead Road.
Diversions are being put in place. Residents are asked not to park on the road during the period of the works.