Infrastructure WA

Major Infrastructure Proposal Assessment

MIPA function has now commenced and interim guidelines released in January 2022

IWA is required to assess major infrastructure proposals with a capital cost of $100 million or more, consistent with its responsibilities under the Infrastructure Western Australia Act 2019.

The Major Infrastructure Proposal Assessment (MIPA) function supports and aligns with existing government requirements such as Department of Treasury’s Strategic Asset Management Framework and Infrastructure Australia’s Assessment Framework, while providing relevant advice to the WA Government to support informed investment decisions.

Interim guidelines

The Major Infrastructure Proposal Assessment: Interim Guidelines provide state agencies and government trading enterprises with guidance on how to navigate MIPA requirements and the assessment process.

The MIPA Interim Guidelines outline the full details of how proposals will be assessed by IWA, and the content requirements for submissions.

The MIPA function will only focus on projects in 2022 while in its initial phase, with further considerations given to programs from 2023.

Over the next year, IWA will continue to work in collaboration with stakeholder agencies and government trading enterprises to embed and refine the MIPA function. Updated MIPA Guidelines will be progressed from late 2022, with the intended expansion of MIPA to cover both projects and programs from 2023.

IWA invites anyone with questions or comments relating to MIPA function or Interim Guidelines to please contact us at or 08 6552 5229.