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Warning

Milestone works on the Thornlie-Cockburn Link will mean major disruptions to Mandurah Line services from late December. Find out more.

Project

Leach Highway and Welshpool Road Interchange upgrades

Welshpool

Overview

  • Road

    Project type
  • $136million

    Total budget
  • Under Construction

    Project phase
  • Main Roads WA

    Lead agency
  • 600

    Jobs supported
  • Mid 2021

    Start date

    Late 2022

    End date

This project involves upgrading the intersection of Leach Highway and Welshpool Road, currently one of Perth’s most congested intersections.

Constructions works will include a grade-separated interchange at the intersection with a new road bridge installed at Leach Highway over the Armadale/Thornlie rail line.

There will also be a shared path for cyclists and pedestrians along Leach Highway from Sevenoaks Street to Orrong Road, including over the Armadale rail line.

Benefits

  • Improved traffic flow
  • Significantly improve travel times and safety
  • Create local jobs and contract opportunities

Project map

This map shows an aerial view of the project location.
Project work area

Detour options

  • Ewing Street North Traffic Changes

    Vehicles will be unable to enter Ewing Street North from Railway Parade for 6 months from Monday 2 August 2021.  

    Traffic at the southern end of Ewing Street North, near Railway Parade, will be reduced to one outgoing lane only, to enable:

    • Roadworks to change the alignment of Ewing Street North near Railway Parade
    • Construction of walls for the new bridge over the railway line.

    Vehicles will be able to enter and exit Ewing Street North from Welshpool Road and exit onto Railway Parade as usual.

    We recognise these changes and construction activities can be disruptive, and we thank you for your patience while these works are underway.

  • Leach Highway and Orrong Road off-ramp closure

    The Orrong Road off-ramp from Leach Highway northbound will be closed 4-6 August from 7pm-5am. Detours will be in place (see detour map).

    This closure will allow for the installation of temporary barriers, temporary road line marking, median clearing and temporary pavement construction along Leach Highway.

    Detailed traffic planning is underway to optimise traffic flows while construction activities are underway. Please drive carefully and observe the signage on the road.

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