​Bridge over Collie River

The bridge will provide a much needed connection between the Treendale and Kingston subdivisions in Australind, Millbridge Private Estate and the Parkridge Estate in Eaton, linking both Shires.

Millbridge and Treendale are two of the fastest growing areas in Western Australia and connecting the two areas is critical to the road network and interconnectivity of the Shires of Dardanup and Harvey.

As well as providing a key social connection, the bridge will offer essential access for emergency service vehicles and connect the commercial precincts of the two subdivisions.

Latest news

Construction is on schedule as the 224-metre bridge over Collier River is nearing completion, with the final launch of the steel bridge beams completed in October.

Remaining works are centred on finishing the concrete decks and the asphalt road surface on the deck. The bridge works will be completed with installation of bridge lighting, parapet panels, guardrails and the Possum Rope structures, which will then allow the Shires of Dardanup and Harvey to complete the approach roads. Coordination of construction activities in relation to the approach roads are currently underway with the respective Shires.

More information about the completion milestone for the bridge launch and the latest works will be made available in our next newsletter in October. Our July newsletter is available here.

Scope of works

The new bridge will be located 3 km north-east of the Eaton Fair Shopping Centre and approximately 1.5 km south of the Treendale Shopping Centre in the Shire of Harvey.

The project comprises of the following main components:

  • Two lane steel/concrete composite bridge structure, 224 metres long and 14.4 metres wide including bridge lighting and a pedestrian walkway on the western side.
  • The Shire of Harvey will extend The Boulevard to connect to the bridge, and construct a fauna / recreational path under the bridge.
  • The Shire of Dardanup will extend Eaton Drive to connect to the bridge, and construct a fauna / recreational path under the bridge.
  • Possum rope structures on the right and left hand side of the main Collie River channel to facilitate the movement of possums along the watercourse subsequent to the bridge construction.

Minimal impacts are expected on the road network given the bridge is a new connection.


An Environmental Management Plan was developed to manage potential impacts on issues including Western Ringtail Possum, water quality, acid sulphate soils management, topsoil and weed management.



Image: Bridge over Collie River during construction


​Key benefits

  • Provide a direct connection and a third alternative route between the Shires
  • Reduce the pressure on Forrest Highway and Old Coast Road and improve safety
  • Provide faster access for emergency service vehicles
  • Reduce travel time
  • Reduce travel distance between the Millbridge and Treendale communities by approximately 10 km
  • An opportunity for improved bus services.
  • A direct pedestrian and cycling link


​Key dates

The bridge is expected to be open in mid-January 2018


​More information

Project Update - November 2017

Newsletter - July 2017

Newsletter - January 2017

Media Statement: New Treendale Bridge works to begin - 5 January 2017

Project Update - June 2016


Last Updated: 22 November 2017