Saltwater Creek
Saltwater Creek
Saltwater Creek

The Saltwater Creek pedestrian bridge is an important link in Wyong Shire Council’s shared pathway network.

It’s a busy track for both pedestrian and cyclist traffic connecting Killarney Vale and Long Jetty, giving easy access to Saltwater Creek Reserve. Our brief required the design of the new pedestrian and cycle bridge to be aesthetically appealing and have a minimal impact on the surrounding views for local residents.

One of the challenges with this project was the surrounding sensitive environment which required careful movements not to disturb the acid sulphate soils in the surrounding mangroves. Also, with the bridge footings at water level, it was essential that we prevent any corrosion occurring to the structure.

DesignExecute2 Process at Saltwater Creek
01 Discover
02 Develop
03 Detail
04 Deliver

01 Discover

  • At Fleetwood, we discover, design and build stunning outdoor structures that are always in harmony with the environment, and always inspired by what the community needs.
  • Our first step was to match the Council’s specifications with products that had already been developed through our DE2 We call these our ‘off-the-shelf’ options.
  • Fleetwood’s ‘off-the-shelf’ products are ideal for our partners who want a tried and tested solution that has already been developed through our Design Engineering Hub. These proprietary solutions are a faster-track to a great outcome.
  • The options chosen were a twin tower cable-stayed Stirling™ bridge, a single tower cable-stayed Stirling™, and a cantilevered arch Sandford™
  • In making their decision, the Council referred to our recently installed pedestrian bridge at Tumbi Creek, Berkeley Vale.

02Develop

  • Following design discussions Council decided on the Sandford™ pedestrian bridge which features rolled main girders, custom arcing central support columns and approaches at both ends. This ensured the pathway was code compliant.
  • The bridge also incorporated FRP mini-mesh joists and decking, galvanised balustrade and a stainless steel handrail.
  • Following collaboration with Council on the chosen bridge design, our visualisation and drafting team assembled a detailed and realistic photomontage. This helped Council to see how the bridge would look.

03Detail

  • After the visualisation step it was essential that every detail was thoroughly documented in preparation for construction.
  • Based on feedback from the client, we made minor changes to the design. However, the advantage of using one of our standard bridge designs means the process was a smooth one.

04Deliver

  • The entire bridge and approaches were manufactured in-house and pre-assembled in three main sections at our Workshop in Wetherill Park.
  • To prevent corrosion and increase the durability of the metal frame and components, we applied Marine Gel coating.
  • Once prepared, we transported the bridge sections to the site for an easy installation by our Onsite Crew. Moving from in-house to on-site, our installation team used an overhead crane to minimise impact on creek banks.
  • Our Onsite Crew is very experienced working within fragile or preservation areas. So to prevent any disturbance to the mangroves, and the release of acid-sulphate during excavation, we used screw piles and concrete footings to support the structure.
  • At the project’s completion, we compared the finished product with the concept designs and were pleased that Council were overwhelmingly happy with the final result.

The Solution

After completion, local residents were very happy and grateful that no elements of the new structure obstructed their existing views. All Australian Standards were also met which was no mean feat for such a complex geometrical shape! All in all, the bridge introduces a beautiful structure that fits well into the environment.

Complex shapes

Not only was the bridge arched in elevation, it was curved at one point, in plan. It was a complex structure to design and detail to ensure that not only it worked structurally, but also met the relevant Australian Standards for a shared cycle and pedestrian path/bridge.

Slim line structure

The bridge had a large span and the design brief from the client was to keep the structure as slimline as possible. We achieved this by designing curved superstructure support that reduced the actual clear span, thereby reducing the size of the main beams

What sets Fleetwood Urban apart is the overall value for money-the product and the price combined. They do both very well. For Council, It’s good to be able to hand over the whole package-Fleetwood do the design and then follow through with quality construction.

Doug Marchant Senior Project Manager, Wyong Shire Council

Project Details

Client

Central Coast Council

Design Partners

Fleetwood Design