NZ Transport Agency crews are repairing areas of the state highway north and south of Kaikoura damaged by the sea over the next month.
There will be short delays of less than five minutes as the road will be reduced to single lane and controlled by traffic lights at each site, with a 30km/h speed limit.
Outside work hours and on weekends the normal speed in these winding, coastal areas of 80km/h will apply and the road will be open to two lanes.
Transport Agency Journey Manager Lee Wright thanked all drivers for taking care near crews while this work is done before the winter. Times are approximate and weather dependent.