Armadale Road to North Lake Road Bridge – Armadale Access Alliance - Perth, Western Australia. Image is courtesy of Main Roads WA.


Perth, Western Australia



Main Roads WA


BG&E Perth
Armadale Road to North Lake Road Bridge – Armadale Access Alliance

The Armadale Road to North Lake Road Bridge was built over Kwinana Freeway to ease congestion, improve access for Cockburn visitors and residents, and compliment other road improvements in the surrounding area.  With the opening of the new bridge over Kwinana Freeway, North Lake Road now connects to Armadale Road.

More than 50,000 vehicles use this part of Armadale Road every day and the opening of the new road network in 2022 marks the culmination of two years of construction.

This world-class project was recognised at the annual Master Builders-Bankwest Excellence in Construction Awards, winning ‘Best Civil Engineering Works Over $100,000,000’ and ‘Construction on a Challenging Site’ categories.

The project was delivered in an Alliance contract by the Armadale Access Alliance comprising Main Roads WA, Laing O’Rourke and BG&E.

Works for this project include:

  • construction of a new bridge over Kwinana Freeway, connecting Armadale Road and North Lake Road;
  • Armadale Road upgraded from Tapper Road to Kwinana Freeway, passing over the intersection of Tapper Road with a new bridge, and under the intersection of Solomon Road, via a trench structure;
  • new north-facing on and off ramps at Kwinana Freeway;
  • local roads reconfigured with two new roundabouts to maintain connectivity;
  • collector-distributor roads on both sides of the Kwinana Freeway from Berrigan Drive to Armadale Road;
  • modifications to the existing North Lake Road and Midgegooroo Avenue signalised intersection; and
  • additional lanes and turning capacity added to the intersection of Armadale Road and Ghostgum Avenue to support ongoing residential growth in the suburbs of Calleya and Treeby.