Stop/go traffic management will be in place for the eastbound lane to enable traffic movement in both directions.
Council's operations team leader - transportation Jennifer Braithwaite said the repairs would fix the sinking and cracking of the road.
"This is, unfortunately, an ongoing issue with peat roads in Waipā. Our peat soils tend to dry and shrink after dry summers and that creates an uneven road surface."
The poor road surface has seen the Cambridge Rd speed limit reduced to 80km/h for the last five months.
Once the road has been repaired, the speed limit will return to 100km/h.
"We know this is a busy road and the repairs may be inconvenient for people in the short term. But our contractor has a road construction crew available to start so we grabbed the opportunity to bring the works forward," Jennifer said.
"We thank people in advance for the patience and hope the weather allows us to complete the works without too much delay."