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Granite Island Causeway Project

The Project

The South Australian Government committed $43 million of funding towards the Granite Island Causeway Project delivered by The Department for Infrastructure and Transport (DIT).

The Granite Island Causeway (the Causeway) is an iconic landmark with considerable heritage value. The Causeway, located 83 km south of Adelaide on the Fleurieu Peninsula, is the only link between Granite Island and the mainland at Victor Harbor and is a site of cultural significance to the traditional owners of the area. The Causeway is also a popular tourist attraction, important to the local, regional and state economies.

Image: Drone image taken of the new and old Causeway 23 December 2021.

A condition assessment identified that the old Causeway was approaching the end of its useful life and a feasibility study into the potential upgrade options determined that retaining the old structure was not viable.

The new Granite Island Causeway continues to deliver and enhance social and economic benefits to the region and provides a long-term solution that is environmentally sensitive.

For more information regarding Granite Island Causeway Environment please follow the link here to view Environment Fact Sheet

The project supports an average of 43 full time equivalent jobs per year, over the life of the project.

The Department will continue to work with the local community, key stakeholders and environmental specialists as the project continues, and consultation and collaboration with the Traditional Owners will also continue to ensure the inclusion and recognition of Aboriginal heritage, as can be seen in the design of the new Causeway.

The new Granite Island Causeway at Victor Harbor opened to pedestrians on Wednesday, 22 December 2021.

Further works will be undertaken in early 2022, to construct the new boat landing facility for the new Causeway, and to complete minor finishing works.

Public access to Granite Island and its facilities will be generally retained during these remaining works, with some intermittent short-term closures of the new Causeway required to enable the works to be undertaken safely.

Horse drawn tram operational from early 2022.

Decommissioning old Causeway (31 January 2022 – Second half of 2022)

The old Granite Island Causeway closed on 31, January 2022. Preparation works will be carried out first before de- construction of the old Causeway. These works are scheduled for completion in the second half of 2022, weather permitting. 

All works will be undertaken during day light hours. The delivery and removal of construction materials will be managed to minimise the impact to the local community, including the Horse Drawn Tram.

Intermittent short-term closures of the new Causeway will be required during the decommissioning to enable works to be undertaken safely.

The protection of marine fauna and flora has been carefully considered throughout the planning and design of the decommissioning. Active monitoring will be ongoing during the scheduled works.

Beach access underneath both Causeways will be closed to the public until completion of the project in the second half of 2022. Community members should not enter the signposted and/or fenced off areas during this time.

Old Causeway Timbers

Following the decommissioning of the old Causeway, all timbers removed from the structure will be stored off site and will be inspected to determine the presence of any pests (termite/borer) and contamination (tar coatings, other) to decide whether the timber is suitable for re-use.

Timber will be sorted and where reusable will be prioritised for re-use as follows:

  • replacement timber where required on the remaining old Causeway viewing platforms;
  • reuse throughout the project (seating, signage, art);
  • stored for re-use on DIT marine jetty structures;
  • allocated to council and DEW (for re-use on local community projects); and
  • made available to registered interested parties.

It is anticipated that a substantial amount of timber will be unsuitable for re-purposing and will be disposed of.

Until the timber structure is decommissioned the Department will not be able to determine the quantities of timber that may be available to interested parties.

The Department cannot guarantee that timber will be available to those who register their interest.

Interested parties can register their details. All interested parties will be advised once more information on the condition of the timbers is known.

Please note the decommissioning of the old Causeway is expected to be completed in the second half of 2022.

Boat Landing

Work has now begun to install a boat landing facility as part of the new Granite Island Causeway.

The landing, which will be positioned halfway across the 600-metre-long causeway, will create better access for local tourism operators.

The installation is expected to be complete in May (weather permitting).


Images: The barge preparing for the installation of the boat landing facility on the new Granite Island Causeway.

Further information

To find out more about the project, provide feedback or register to receive project information as it becomes available, register your details or:

COVID-19 Response

The Department will continue to tailor community engagement opportunities in line with the latest COVID-19 advice from health authorities.

Face-to-face engagement opportunities may be restricted and we will continue to be guided by the advice of health authorities, with the health and safety of our stakeholders always our highest priority.

Engagement with community and industry is crucial and we will facilitate information sessions as much as possible to enable face to face engagement.  It is important to assist in managing these events that you register as requested to enable physical distancing as much as possible.