Challenge

Renewal of the large diameter watermain called Huia No.1 which has reached the end of its useful life. The watermain was built in the 1940s after World War II. To extend its life it was rehabilitated in the 1980s but now there is need to build a new pipe. Over the next few years, the 17km pipe is being built in sections across West and Central Auckland, in many cased through major intersection and long busy traffic routes.

Solution

With the help from our TIAs, work on busy roads and intersections are scheduled around annual holiday when traffic volumes are typically lower meaning the closures have less impact on the community. On quieter sections of the road corridor road closures are utilised with multiple crews are deployed in order to lower the time frame for each section to be installed.

Results

This project is ongoing, but is progressing well