The Huntly bypass section of the Waikato Expressway has now been open since just before the lockdown and here is some information and a video to prepare for when you do get to drive on it, if you have not already.
The NZ Transport Agency newsletter on the opening has a map of the bypass and an explanation of the cultural art work and the two paa sites:
https://www.nzta.govt.nz/assets/projects/huntly/docs/huntly-project-update-march-2020.pdf
A video of the flyover the Huntly bypass, starting from the north, going south, with Huntly on the right hand side of the screen:
and which can also be accessed through a Waikato Times article
https://www.stuff.co.nz/motoring/news/121359977/final-flyover-of-the-huntly-section-of-waikato-expressway