Port Noarlunga Jetty Divers Stairs Project Update
Published on 21 November 2019
We can advise the installation of the jetty stairs is proposed to start mid-December 2019.
Our contractor has advised an anticipated commencement date of mid-December, following completion of other large jetty projects on the west coast of the Eyre Peninsula which have experienced some delays due to the complex logistics involved. The proposed start time is subject to favourable weather conditions to complete both the work on the West Coast and the installation of the stairs at Port Noarlunga.
The new stair installation requires specialist barge and pile driving equipment which has limited availability in the state. We have explored other options to undertake this work without a barge (piling equipment mounted to the jetty) but these were found to be unsuitable.
The installation process for the jetty stairs will be broken into four stages:
- Stage 1: On-site pile driving [Approximately 3 days in mid-December 2019] followed by final survey of the pile positions
- Stage 2: Off-site fabrication of custom fittings based on pile final position, and pre-assembly of staircase
- Stage 3: On-site installation of stair connections [Approximately 3 days in mid-January 2020]
- Stage 4: On-site staircase installation [Approximately 3 days in mid-late January 2020]
Jetty Closures and Marine Exclusion Zones
We appreciate that construction will occur through a very busy period however we will make every effort to ensure that the partial jetty closures are minimised, whilst ensuring that public safety is maintained.
The attached plan shows the maximum exclusion zones required for the installation of the stairs. The stair access located mid-way along the jetty is outside of the identified exclusion zones and will remain open for the duration of the project.
The barge is 30m long and the exclusion zone must be large enough to allow working and manoeuvring space and not encourage people to get close. For some activities the exclusion zone may be reduced to 50m depending on the activities being undertaken.
The closure of the jetty will only occur while works are being undertaken and the intent is to open the jetty when safe to do so between the stages outlined above.
Ocean exclusion zone will be marked out with signed buoys.
Site layout(PDF, 155KB)
Jetty Stair Design
The design of the new stairs was undertaken in consultation with users and organisations that regularly use the jetty and is a substantial upgrade to the original structure.
Some of the key features designed to improve safe and efficient access to the water include:
- much improved entry that allows fully kitted divers to access the water
- handrails have been purposely left off along the lower platforms to allow multiple entry and exit points to the water at varying tide heights
- lower platforms are walk on/off through the tide cycle instead of climbing ladders
Design plans may be viewed below.
Jetty access site plan(PDF, 223KB)