WestConnex: M4 East & New M5

CPB Samsung John Holland JV
CPB Dragados Samsung JV

Procurement Advice
Testing and Commissioning

2016 - Ongoing

The M4 East is the first underground section of WestConnex. It will connect to the widened M4 and extend it via twin motorway tunnels from Homebush to Haberfield with three lanes in each direction. The M4 East will alleviate the frustrating delays and gridlock that motorists face daily when they come off the M4 and hit a standstill on Parramatta Road.


The New M5 will provide twin underground motorway tunnels, nine kilometers long, from Kingsgrove to a new St Peters Interchange at the site of the old Alexandria landfill facility. The St Peters Interchange will provide motorists with connections to Alexandria and Mascot. It also includes connections to the future Sydney Gateway and M4-M5 Link. The New M5 tunnels will be marked for two lanes in each direction, with capacity to add a third and include underground connection points for the M4-M5 Link and the proposed F6 Extension.


ARCH Services was brought in to assist in two key aspects of the projects:

  • Procurement Advice We undertook an independent due diligence review of the procurement of the tunnel ventilation system including axial fans, jet fans, dampers and attenuators. The review covered technical compliance, capacity and track record of the suppliers as well as their ability to meet program commitments. The due diligence review provided the steering committee with the confidence to proceed with these major, high-risk procurement packages.

  • Testing and Commissioning The new M5 project has over 25,000 mechanical, electrical, ITS and control system assets that require testing and commissioning prior to handover and operation.  ARCH Services is involved in the planning for the FAT, FIT and SAT testing and commissioning, which will peak at more than 100 professionals and trade personnel.



JOHN ARMSTRONG  Managing Director

0452 544 149



ROB SMERDON  Executive Director

0488 488 324


Director - Engineering and Project Management  

0400 300 246


Director - Safety and Systems Assurance  

0481 913 592


ARCH Artifex

Suit 5.02 | Level 5
82 Elizabeth Street Sydney NSW 2000

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