Constructability Review for City West Project awarded to Design and Analysis

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Public Transport Authority awarded a contract to Design and Analysis (Design and Analysis Pty Ltd) for a constructability review of the City West Project.

The contract covered assessment of two phases — Phase One: replacement and raising of the Sutherland Street bridges; Phase Two: upgrade/replacement of City West Station, including the proposed new underpass — and required a concise report with supporting appendices addressing each phase individually and combined.

Deliverables included staging plans, construction methodology and techniques to reduce closure time, high-level construction timeframes identifying all required closures and their durations, identification and detailing of long-lead items with estimated procurement and preconstruction durations, construction stage land requirements, a high-level review of bridge foundation/substructure including mechanical/chemical stabilisation options, identification of key risks and any potential fatal flaws with proposed mitigation measures and suggestions for improvement, recommended additional design information to inform risk, and a supplier presentation of findings (allow 3 hours).

The primary objectives were to support development of mitigation strategies to control key programme risks, reduce or avoid closure of the Fremantle line, shorten the overall construction timeline and minimise disruption to the adjacent road network and Principal Shared Path (PSP).