The South East Halswell scheme has seen deep trenches dug to make way for a new pressure sewer pipe that stretches across 8 kilometres.
Installation of the new pipe got underway in January and is expected to be completed by the end of May.
The Christchurch City Council is spending 8 million dollars on the project which will open up 420 hectares of land for housing development.
This development means Halswell will have room for more than 5,200 new homes - about 14,000 residents.
Council Senior Project Manager, Kyllie Hills said while the project will mean disruption for some motorists it will offer long term benefits for residents in the area.