Project Kirra

  • Project typeOcean, beaches & waterways
  • Project value$800,000
  • Project scheduleJuly 2013 – December 2013
Kirra Pavillion

In 2013, the City reinstated Kirra Groyne to its original length to better manage movement of sand along southern Gold Coast beaches.

The work was part of our investment in the future management of Gold Coast foreshores and aligned to the City's Ocean Beaches Strategy.

History

  • A groyne is a low wall or barrier built out to sea from a beach to check erosion and drifting.
  • In 1972, two groynes were constructed at Kirra Point and Miles Street to mitigate coastal erosion along southern beaches.
  • The City removed 30 metres of Kirra Groyne in 1996 following commencement of the Tweed River Entrance Sand Bypass Project. This work assisted movement of increased sand produced from the bypass project.
  • Community stakeholders requested reinstatement of the groyne to the original length of 180 metres when sand movement returned to normal levels.

Construction

  • Project Kirra involved the placement of specialist rock material in layers to form the groyne structure.
  • The reinstatement works required both primary (10-15 tonnes) and secondary (5-8 tonnes) rock layers.
  • Some of the sourced material was used to construct the original groyne in 1972.

Partnership

The City partnered with the Griffith Centre for Coastal Management to share information about construction methods, testing and certification, and coastal engineering issues.

Outcome

The lengthened groyne has increased the width of the beach and improved amenity of the site.