The road design reduces adverse effects on the landscape and its plants and animals by being built lower into the landscape.
This means less digging is needed. It also means there will be less fill to dispose of and natural hill contours and streams can be retained.
Where the homes of native plant and animal species are affected, new homes will be found. Extensive native plantings will be carried out to make up for what is lost by way of vegetation.
The planting of natural vegetation to replace any indigenous vegetation lost during the project will be at a ratio of 10-(gain)-to-1-(lost) –- one of the largest ratios in any New Zealand roading project. Some habitats will actually increase in size.