"Significant delays are anticipated. Motorists are encouraged to allow extra time for travel, use alternative routes or plan travel outside these times."
Contractors would be stationed along the detour route to monitor delays and make adjustments as necessary.
During the closure, 10 reinforced concrete beams would be placed across SH2 near Te Maunga intersection by a crane positioned in the middle of the state highway.
Work would take place across both day and night shifts to minimise the duration of the closure.
"Waka Kotahi thanks motorists, local residents and businesses for their patience."