Transport
Coolup East Bridge Replacement over Murray River
Location
Ravenswood, Western Australia
Value
$6.6 million
Client
Main Roads Western Australia
Status
Complete
About the project
The project consisted of the demolition of the timber bridge that had a 10-tonne load limit and the construction of a new incrementally launched composite steel box girder, precast and in-situ concrete bridge.
Scope
Establishment of a 70 metre long casting bed with concrete supports for the incremental launch of steel and concrete bridge sections
Installation of alternative temporary piers at the 25 metre mid-span to assist with the launch of the bridge sections
Launch of the steel and concrete composite bridge structure in two launch events of 50 metre span lengths weighing in excess of 3000 tonnes
Construction of concrete bridge deck, wing walls, back walls and approach slabs at the abutments
Demolition of the existing 13 span, timber piled bridge
Installation of drainage and sub-surface drainage
Revegetation and landscaping works
Installation of rock armour to abutment slopes
Construction of new pavements and seal surfacing
Outcomes
Design and construction of the bridge was approached in collaboration with Main Roads Western Australia, delivering an innovative incremental launch technique, a first for Western Australia. The project site was limited to a tight footprint and works were carefully planned and staged to ensure continual progress, successfully launching the first 50 metre span of the structure in May 2016. This milestone, along with the fast tracked schedule resulted in the delivery of all project objectives including on time and within budget.