Department of Infrastructure, Transport, Regional Development, Communications and the Arts

Leach Highway (Welshpool Road) Interchange

Funding Program:Urban Congestion Fund
Status:Under construction
Transport Mode:Road
Expected Start/Finish:Mid 2021 - Early 2023
Estimated Project Cost:$136,000,000
Australian Government Contribution:$68,000,000
Local Council/Shire:City of Canning

Project Description

The project will construct an overpass to separate the Leach Highway from Welshpool Road and upgrade the Leach Highway Bridge over rail south of the proposed Welshpool interchange.


The project will: 

  • improve efficiency and network reliability
  • reduce congestion and improve travel times
  • improve freight productivity and access to freight gateways


The Australian Government has committed $68 million towards the $136 million project.


The project commenced in June 2021 and is expected to be complete early 2023.

Disclaimer: The material contained in this site is made available on the understanding that the Department is not thereby engaged in rendering professional advice for a particular purpose. Before relying on the material in any important matter, users should carefully evaluate the accuracy, completeness and relevance of the information for their purposes and should obtain appropriate professional advice relevant to their particular circumstances.

Project details last updated: 18/06/2021