Projects

Northbank Foreshore Riverbank Stabilisation Plan

Project Starts: 

Monday, 23 January, 2017

Location: 

Project Type: 

One Planet (sustainability)

Background Information: 

The City of Fremantle has engaged a coastal engineering consultant to develop the Northbank foreshore stabilisation plan.

The aim of the plan is to minimise erosion damage and improve amenity on the Swan River foreshore between the Fremantle Traffic Bridge and Sorrell Park.

The City has a collaborative arrangement with the Department of Biodiversity, Conservation and Attractions and has received grant funding through the Riverbank Program to undertake this project.

From both environmental and recreational management perspectives this is a valuable area. As part of the site analysis, the City in partnership with the engineering consultant, has sought comment from both key stakeholders and the broader community to help understand concerns and aspirations for this location.

Objectives / benefits

  • Implement recommendations made in the North Fremantle Foreshore Management Plan 2013.
  • Determine the issues related to riverbank stabilisation through environmental site investigation, data analysis and consultation with stakeholders and the broader community.
  • Develop a plan that reduces erosion of the riverbank and improves public amenity of the foreshore , now and into the future.
  • The plan will define  the preferred shoreline stabilisation treatment that will be designed and implemented subject to available grant funds and budget.

Current status / timeline

Stage 1 is complete

Site analysis:
This included a comprehensive review of all existing technical reports, available data and existing best management practices for riverbank stabilisation.

Stage 2 is complete

Consultation:
The City and the coastal engineers have consulted with the local community and key state government bodies who have assets within or adjacent to the Northbank site to understand their future plans for the area and how any changes may impact their assets.

We also asked for feedback from the local community on how they use this section of the Swan River and what they thought important for us to consider when designing options to stabilise the foreshore.

Our first stage of community engagement delivered clear messages that this is a popular area for swimming, kayaking and fishing and there are different community preferences to minimise erosion. It was also clear that the community wants to know more about the causes of erosion and stabilisation options.

Stage 3 is complete

Concept option development:
This involves the development and testing of a range of foreshore stabilisation options. Options were informed by the previous stages of the project and feedback from community on concerns and aspirations for the site.

Designing possible concept options requires balancing a number of factors, such as amenity, aesthetics, access, design life, construction costs, ongoing maintenance costs, environmental considerations and impact of the stabilisation option on other areas.

To determine a more accurate cost for each option we also need to identify the remediation required to ensure below-surface soil contaminants are not released into the environment. Prior to housing development near the site, the land was used by industry.

We need to better understand the impact of any required remediation when disturbing the soil on the overall cost of the concept options.

Community consultation:
We presented the foreshore stabilisation options for community comment at a community information session. The pros and cons of each option and the estimated costs will be included. This provided the community with the opportunity to ask questions of the City, the Department of Biodiversity, Conservation and Attractions and the consultant coastal engineers. Comment was sought by the community through MySay.

Recommendation:
The project team assessed the impacts of the potential shoreline treatments using multi-criteria analysis. This analysis included comments provided by the community and resulted in a recommendation  on the preferred stabilisation option.

Council decision
A report to council on the preferred option was discussed at Finance, Policy, Operations and Legislation Committee (F-POL) in September 2018 and was deferred to allow the committee to undertake a site visit and more time to consider the options. View the F-POL September 2018 committee minutes.

The report was resubmitted to Council and was discussed at F-POL in November 2018. The committee recommended that:

  • the plan be received and requested officers to carry out a further review and develop a preferred concept to be brought back to Council for endorsement, subject to consideration of environmental and cost implications identified through further detailed site investigations
  • officers be requested to place the detailed design on hold pending further liaison with Main Roads WA regarding the future of the Fremantle Traffic Bridge and maintenance works to the bridge embankment, and further funding becoming available through the Riverbank grants
  • officers be requested to include the detailed design and implementation into a high-level plan to accommodate phasing the project and potential funding for consideration in the City’s 10 year financial plan.

View the F-POL November 2018 committee minutes.

This was adopted by council at their November 2018. View the November 2018 council minutes.

City officers have carried out a further review of the report and provided an opportunity for elected members consider the report further. The report will be resubmitted to Council in April 2019 and will be considered prior to this at the Finance, Policy, Operations and Legislation Committee in April 2019.

Stage 4

At council’s request, this the detailed design has been put on hold pending further liaison with Main Roads WA regarding the future of the Fremantle Traffic Bridge and maintenance works to the bridge embankment, and further funding becoming available through the Riverbank grants. The detailed design and implementation have been incorporated into a high-level plan that accommodates phasing of the project and potential funding for consideration in the City’s 10 year financial plan.

Useful information

This is a study only. Funding to  undertake the detailed design and the foreshore stabilisation works will be sought in accordance with the council decision.

Contact the City's Parks and Landscape team on 08 9432 9999.

Coordinates: 
POINT (-95.6204145 35.9499507)