Seawall design
The vertical curved seawalls were chosen for the design of the shared path due to being more effective at deflecting wave energy offshore in comparison with other options, as well as their reduced footprint on the foreshore. Additionally, they are designed to prevent coastal erosion and will provide protection against storm surges, and therefore reduce the likelihood of damage to the road and shared path.
The design is also future-proofed, with the ability to be adapted to accommodate for sea level rise. Texture is applied to the seawall faces to provide habitat for intertidal biota and coastal species, as part of the environmental mitigation measures for the project. This will be a consistent detailing to reduce the visual impact of the seawall.
More information around these details can be seen within the Bay-Specific Urban Design Plans which can be found at the links below.
The method for construction of the new seawalls is outlined in the image below.
Consultation on the draft designs for Ngau Matau/Pt Howard, Sorrento Bay and Whiorau/Lowry Bays wrapped up in December 2023. Feedback has been collated and a summary of comments and responses is available below under ‘Project documents’.
Thanks to everyone who shared their feedback. The Bay Specific Urban Design Plans are currently being finalised in preparation for certification.
Details of the comments and responses received during the consultation for previous bays are available from the summary report in the Project Documents section of this page.