Stonehill Estate

“One elegant bridge solution solves two community problems”

Executive Summary

Stonehill is a new, master-planned community in Bacchus Marsh, Victoria. Dividing the site however was a gorge almost 60 metres wide and 18 metres deep formed by the Werribee River. This was not just an issue for pedestrian connectivity for the new community, but was proving a major challenge for installing the sewer main infrastructure. The landscape architect, Spiire, saw the opportunity to solve two problems with the same solution. They looked to Fleetwood for ways to adapt our Stirling™ cable stayed bridge to create a shared cycle crossing that could also carry the new sewer line. By using Fleetwood’s specialist knowledge and proven technology, we were able to make the complex simple, and create the new bridge just as the designers envisaged – providing both practical amenity and attractive infrastructure.

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Client

Devine

Completed

2012

State

VIC

Design Partners

Spiire

Scope of Work

Deliver, Detail, Develop, Discover

Fleetwood Involvement

Fleetwood worked with Spiire using our DesignExecute2™ approach to achieve a highly successful outcome. Together, we had direct control over the end product. There was no third party involved. Our team worked with the design, the construction and the manufacturing, streamlining the process right up to the final installation. The bridge itself has a galvanised steel superstructure, fibre reinforced plastic (FRP) decking, painted towers and galvanised steel cables. The main concrete piers were drilled and poured using a 45-tonne piling rig. Four large abutments were also poured on site.

More Project Information

1

It was essential for the design of the bridge to hold the sewer pipe at the correct percentage ratio of fall to allow efficient flow. Achieving this required millimetre accuracy in both the design and shop detailing stages.

2

Installing the bridge in sections, whilst simultaneously inserting the sewer pipe, was the key challenge. It required considerable pre-planning, with Fleetwood and the Water Services contractor working very closely before and during the actual installation.

3

The bridge structure was based on our in-house Stirling™ system. However our design engineers delivered a series of innovative modifications to cleverly conceal the new sewerage pipe, carrying it from one side of the embankment to the other.

4

  • 54-metre cable stayed bridge
  • Galvanised steel cables
  • Bright red support towers
5

  • Mild steel
  • Hot dip galvanising
  • Non marine grade paint system
  • FRP minimesh
  • Poured concrete piles
6

  • Stirling™ bridge
7

Working at heights, above and adjacent to the Werribee River, required careful planning to ensure the safety of work crews and the wider Stonehill community.

8

At 54 metres in length, and standing in excess of 18 metres high over a gorge of 18 metres deep, the shared cycle bridge with its vibrant red towers is now an outstanding feature of the landscape, providing both social connection and community pride for Stonehill residents.

9

By enabling pedestrians and cyclists to easily navigate the local reaches of the Werribee River, the bridge provides an important new access link for the whole Stonehill community to enjoy.

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