The new ACC building in Dowling St is being built by Ngāi Tahu Property.
This week the iwi property management and investment company said removal of the tower crane from the site would require traffic management outside on Crawford St (State Highway1) and Queens Gardens from tomorrow to Sunday.
At times, pedestrians, cyclists and vehicles would be paused as trucks pulled out of the site and moved into the street, a company statement said.
Ngāi Tahu Property general manager Blair Forgie said dismantling and removing the crane from the site marked a major milestone for the project.
"Once the crane is removed, we can move into completing the roof, making the building fully enclosed and watertight," he said.
Corporate and finance deputy chief executive Stewart McRobie said the removal of the crane was "a clear sign of the progress" at the site.
"We are thrilled with how the project is advancing and are eager to see the final stages come together," Mr McRobie said.
"This building will not only provide a modern and efficient work space but also reflect the cultural heritage and sustainability values that are important to us."
Ngāi Tahu Property, in partnership with ACC Investments, was developing the four-storey, 8600sq m building, he said.
Dubbed "ACC Ōtepoti", it remained on track to be completed in the middle of next year.
The tower crane has been in place at the site since May last year.
