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News: Sumner Road Geotechnical Risk Mitigation Project


Sumner Road Geotechnical Risk Mitigation Project

31 Aug 2018 1:08pm
Fri 31st Aug 2018 13:08 pm
Last updated
31 Aug 2018 2:02pm

The work underway at the bottom of Sumner Road to reinstate the largest retaining wall is going to take a month longer than expected to complete.

In February, when the team were excavating the retaining wall to being work they discovered that it was longer than previously thought. 

This increase in size meant that there would be more work than expected and the repair would take more time that had been programmed.

The bad weather recently has also impacted on the progress of the wall. This means the traffic management currently in place on parts of Sumner Road and Reserve Terrace (shown in the map below) will remain in place for one more month to complete the work on the nearby wall. 

The road needs to be closed to ensure the safety of the public while heavy machinery moves around the area. 

The rehabilitation work includes drilling anchors into the bedrock behind the existing 100m long wall, installing new reinforced concrete facing and safety barriers and resurfacing the pavement.

Sumner Road project is scheduled to be complete and the road reopened early in 2019.

If you have any questions or concerns, please contact the team on 0508 MCD COMMS (0508 623 266).

To receive project updates send your name and email address to: or visit

For a copy of this document click here.