The nights of work are Tuesday night to Thursday night in the week after Easter then Sunday night until Thursday night, with the night work expected to be complete by April 18.
The road would be shut between 8pm and 6am while work was taking place, with the northbound lanes scheduled to be done first, followed by the southbound lanes.
While the Te Rapa section was closed the detour between the Horotiu Interchange and SH1C Mangaharakeke Drive would be via Wairere Drive and Te Rapa Road.
Once the single-lane sections were complete crews would move into the double-lane sections. That would be done during the day with lane closures, traffic shifts and temporary speed limits in place.
Anyone planning to drive on the Te Rapa section over the next few months was advised to check journeys.nzta.govt.nz for the latest traffic and travel information.
The project was due to be complete by the end of June 2024.
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