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Mackerel Beach Wharf Upgrade

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  2. Mackerel Beach Wharf Upgrade

Project snapshot

Proudly funded by the NSW Government and Australian Government in association with Northern Beaches Council.

What's happening?

What's happening?

We are upgrading Mackerel Beach Wharf to meet current engineering standards and improve accessibility for users and the local community.

After meeting with local residents throughout development of the concept design, we asked the wider community for any additional feedback. You can read the outcomes from engagement, including all comments received, in the Community Engagement Report.

What's next?

We have now finalised the design, taking your feedback into consideration and incorporating some of your suggestions where possible. In addition, the Review of Environmental Factors (REF) has been finalised, and we will begin a tender process to engage a contractor to build the wharf extension.

Construction won't commence until March 2026 to avoid interference with seahorse breeding season.

Click +Follow at the top of the page to register for project updates, and we'll keep you informed as construction commences.

Consultation

​Consultation

We exhibited the concept design between 8 November and 8 December 2024 and received feedback from 55 people. Your feedback told us there is overall support for the upgrade, with some suggestions for changes, e.g. more tie-ups, flat-top piles, and a smaller gap between the wharf and vessels.

Those who did not support the proposal raised concerns around its size and what it would cost to complete the upgrade.

Read the Community Engagement Report open in new window

What you told us

Proposal

What was proposed?

  • Key features of the proposed upgrade include:

    • moving the wharf back to the area where it slopes to the wharf head
    • extending the wharf by approximately 35m to approximately 105m total length to provide access at all tidal times for all users that complies with the Disability Discrimination Act (DDA) 1992
    • providing a dedicated bin storage area.

The design has taken a number of environmental impacts into consideration, including:

  • short‐term impacts to water quality during the works
  • loss of public access during the works area
  • short‐term noise and vibration impacts associated primarily with the piling works
  • loss of or damage to seagrasses
  • risk of dislodgement and dispersal of the aquatic pest Caulerpa taxifolia
  • short‐term impacts to biodiversity, particularly White’s Seahorse, due to noise and localised loss of habitat and water quality impacts.

We engaged a local ecologist to provide advice and a report regarding ecological impacts on the site. These recommendations have informed our Review of Environmental Factors (REF).

The most significant environmental impact from construction would be damage to the Posidonia Grass (seagrass) and White Seahorses.

To mitigate risks to the environment, specialised dive teams will relocate all seahorses before any demolition works commence. Construction will be delayed to March 2026 to avoid the breeding season.

Barge work will also be undertaken to minimise any potential damage to seagrass.

Mitigation measures may include:

  • working only in high tides
  • no anchors or spuds to be used to hold barges in place.
  • no extended period of mooring barges in the same location (such that seagrass is deprived of sunlight)
  • offsetting seagrass away from the new structure.

Image gallery

View the 3D models pictured below - click on an image to enlarge.
long wharf from beach - 3d model
close up of wharf - 3d model
Download the draft concept plan open in new window

FAQs

Frequently asked questions

  • Is ‘do nothing’ an option?
  • Why have you gone for this style of wharf extension?
  • How much is the wharf being extended by?

Frequently asked questions

  • Is ‘do nothing’ an option?
  • No, the current structure is showing signs of distress and will need major works in the near future to maintain the wharf to an operation standard.

    There is also the issue of meeting accessibility requirements.


  • Why have you gone for this style of wharf extension?
  • This type of wharf extension provides improved disability access to the wharf, as well as minimising the long-term maintenance requirements.


  • How much is the wharf being extended by?
  • The overall length of the wharf will be extended by 35m.

    Additionally, the area before the ramp will be widened for dedicated bin storage.

  • Have we considered a pontoon or hydraulic ramp construction?
  • We looked at the option of a pontoon, however it is not a viable option due to the tidal impact at this location.

    Early concepts for the site progressed the option of hydraulic ramp construction. During the development stage, we looked into the longevity of this style, and identified that a hydraulic type of construction would lead to high maintenance costs and maintenance intervention would be required due to the coastal effects of this site.


  • Why haven't we progressed the L-shaped wharf concept mentioned in the 2008 PoM 2008 masterplan?
  • We moved away from this option due to the impact the construction have on the Posidonia Grass (an endangered species of seagrass) and White Seahorses, as the L-shape would cover a very large area of seagrass.

    This type of construction would also reduce the number of dinghy moorings available.

  • Have we considered the number of boat moorings at the site with regards to increasing the number available.
  • Yes - we considered this during the design stage to ensure the impact on number of dinghy moorings available, the monitoring will continue to be managed by Transport for NSW.

    The final number of tie-ups will be determined in the final design.

  • Has bin storage been considered in the design?
  • Yes, the design provides dedicated bin storage on the wharf.

  • How will people access the wharf?
  • Ladders will be installed on both sides of the wharf to provide additional access means for residents.

    Tidal steps have been provided on the southern side of the wharf for day-to-day access by visitors and occupants.

    The ferry will use the ramp for access on the northern side of the wharf.


    During construction:

    We are investigating options for a temporary structure for use during construction, this will be discussed with the successful contractor at the tender stage to provide the best outcome. The existing ladders will still be in place.

  • Have the ferry operators been involved in the project development?
  • Yes, we have been working with the ferry operators to ensure the wharf will meet their present and future needs.

    The ferry operator will continue to operate on the northern side with the option to berth on the southern side if required by the tidal impact.

  • Has ferry overrun been considered as part of the design?
  • Yes, we have been working with the ferry operator regarding ferry overrun and the risk of the occurrence. Any requirements to manage this will be established as part of the final design.

  • How is the upgrade being funded?
  • The works are jointly funded by the NSW Government, the Australian Federal Government, and Northern Beaches Council.


Timeline

  • Timeline item 1 - complete

    Nov 2024: Open and listening

    We asked for your thoughts on the proposal

  • Timeline item 2 - complete

    Early 2025: Under review

    We reviewed all responses received and prepared a report

  • Timeline item 3 - complete

    Mid 2025: Sharing what we heard

    We shared what we learnt from your feedback in our Community Engagement Report, and advised next steps

  • Timeline item 4 - incomplete

    Mid 2026: Construction anticipated to commence

Have an enquiry?

Contact Information
Name Transport & Civil Infrastructure Assets Team
Phone 1300 434 434
Email council@northernbeaches.nsw.gov.au
In writing

marked 'Mackerel Beach - Wharf upgrade', Northern Beaches Council, PO Box 82, Manly NSW 1655.



Contact customer service on:

1300 434 434

We acknowledge the Traditional Custodians and their Country on which we gather today. By these words we show our respect to all Aboriginal people. We acknowledge Elders past, present and emerging and the spirits and ancestors of the Clans that lived in this area.

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