Project background
Council is planning to upgrade a segment of existing coastal seawall at Queens Beach South, Redcliffe. The proposed coastal protection works extend from Humpybong Creek to Grant Street. This upgrade will replace an existing informal seawall that is in poor condition and include the addition of two new groynes.
Council has engaged a specialist engineering consultant to design the coastal protection works.
Project objectives
The key objective of the project is to provide improved coastal protection to public infrastructure behind the seawall. The project is also seeking to improve safety plus beach amenity and access along the foreshore, as well as improving the performance of the two major stormwater drainage outfalls.
New seawall concept
The proposed works broadly encompass four main components:
- Replacement and upgrade of the approximately 230 metre long existing informal rock armour seawall.
- Two new rock groynes located adjacent to the major stormwater outfalls.
- Sand replenishment of up to approximately 15,000-20,000 m3 of new beach sand.
- A new beach maintenance access ramp at Steven Street.
No changes are proposed to the two existing concrete seawalls.
The current design concept is for a rock armour seawall with a concrete crest wall to replace the existing informal seawall. Two sets of pedestrian access stairs, plus a beach maintenance access ramp, are also proposed for this seawall segment.
The two new proposed groynes will serve to contain the sand replenishment, and in-turn help to reduce beach maintenance works and improve performance of the two major stormwater drains.