November 29, 2019
The works proposed for the Cowell foreshore, in pristine Franklin Harbour, including:
- a new marina located off the boat ramp access channel, with upgrades to breakwaters
- extensive wharf areas with boardwalks
- accommodation and retail facilities
- improved traffic flow.
The initial stage of the works have commenced in 2019, and involve temporarily bunding off the existing marina, which is to be excavated in the dry to a depth that enables use of the marina by large commercial craft.
The design of the surrounding breakwater upgrades accommodates for sea level rise to ensure design life expectations are met. The design required stakeholder and community engagement, in particular consideration was given to the local oyster punts that regularly use the boat ramp and wanted to retain the existing tyre wharf.
Magryn implemented this into the design, as well as giving careful consideration to the environmental impact in a sensitive area such as Cowell.
The proposed Shute Harbour marina is to be located in Shute Harbour, adjacent Airlie Beach, in the Whitsunday Islands of Queensland.
Magryn have undertaken the design of:
- sheet pile wharf areas around the marina
- land fill areas for housing and retail/hotel development
- stormwater design
- road design
Shute Harbour is in a tropical cyclone-prone area and all design work undertaken took this into account.
The design also had to account for the existing soft marine clay which allowed potential for post-construction settlement, as well as the presence of underlying volcanic rock. Magryn considered these unique design parameters as well as other factors in relation to the construction methodology when designing the sheet pile revetments and reclamation area. The design of the sheet pile breakwater around the marina incorporated a trafficable glass fibre reinforced concrete pile cap.
Approvals have been received for the development and construction works are to commence shortly.
The historical timber main wharf at Pt Augusta was built in 1870 and has seen irregular and adhoc maintenance over the years.
In 2018, Magryn undertook a comprehensive assessment of the whole of the wharf, including timber decking, wharf substructure and timber support piles, both above and below water level.
This assessment showed that the wharf is in poor condition and urgently in need of maintenance and structural repair. A plan was formulated by Magryn to allow this project to be tackled over several years, with the most urgent areas of concern address first.
If these works are carried out it is anticipated that the historical wharf can be retained and used for recreational purposes of the community into the future.