Location Value Client
Welshpool, WA $12M ~ Leach Welshpool Alliance (LWA)



The Leach Welshpool Alliance (LWA) project is an Alliance Project comprising of Main Roads Western Australia (MRWA) and Non-Owner Participants (NOP’s) consisting of Georgiou Group, BG&E, Golder & Associates and Westforce Construction (participating as a Sub-Alliance Partner).

The scope of this brownfields project is to upgrade Leach Highway by building two new bridge overpasses – one over Welshpool Road to create a new grade separated interchange and one over Railway Parade and Sevenoaks Street, effectively doubling the capacity of the existing bridge in this location. As part of the project the road network between Orrong road and Albany Highway is also being upgraded.

The project will support the east-west freight link connecting Fremantle with the Kewdale and Welshpool industrial area. It will also provide access to many industries and businesses.

Used by around 50,000 vehicles per day, Leach Highway and Welshpool Road is currently ranked as one of the worst intersections across Western Australia for crash frequency.

For more information, please visit Main Roads WA



  • Construction of a new bridge taking Leach Highway over Welshpool Road to create a grade-separated interchange.
  • Two Span Bridge with T-Roff beams spanning ~46m (piers and other elements were constructed in the vicinity of live traffic)
  • Duplication of the existing Leach Highway Bridge over rail near existing Bridge 0977 on Leach Highway and OH 66kv transmission lines
  • New Principal Shared Path (PSP) along Leach Highway from Sevenoaks Street to Orrong Road
  • Road and drainage aspects of the project


Prequalification Category: R5 B4 F150+
In situ Concrete: 8,300 m3 ~
Precast Concrete Beams: 2,000 m3 ~