A road in Spixworth will be permanently closed from Monday because of the creation of the Norwich Northern Distributor Road.
And three way traffic lights will be used while work to change a junction is done.
Rackheath Lane is being permanently closed at its junction with the B1150 North Walsham Road because journeys between the B1150 and Wroxham Road can now be taken on the section of the NDR which is open.
Norfolk County Council says the closure will also simplify the junction of Crostwick Lane in Spixworth with the B1150.
Traffic turning out of Crostwick Lane will no longer have to contend with traffic joining and crossing from Rackheath Lane.
The mouth of Crostwick Lane is being altered to allow for more right turns towards Norwich and the NDR.
But three way traffic lights will be in place for around two weeks while that work is done. They will be in use at off-peak times only.
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