Motorists are being thanked for their patience but advised to plan their route and time of travel while a major artery into Whangarei's city centre is blocked.
Whangarei District Council is warning that the closure of Nixon St on either side of Mill Rd, between Kamo Rd and Mair St, will take some getting used to.
"We too will just be getting to know how the traffic responds to the changes, and we will be altering the lights to best suit the traffic, but it will take a few days to get this right," WDC spokeswoman Ann Midson said.
"The best advice is head out a bit earlier or later than usual, stay calm, plan ahead, give everyone a fair go, we are all on a learning curve."
The road was closed on Monday and will remain so until May while power, phone, water and sewerage lines are moved.