John Holland Pty Ltd has been awarded the first construction contract for the $1.12 billion NorthLink WA project.
In announcing the contract today, Minister for Major Projects Paul Fletcher said the contract was a significant step in realising the vision of NorthLink WA.
"The Tonkin Highway is a vital link for regional traffic movements to commercial and industrial areas such as Malaga, Kewdale, Perth Airport and the Perth CBD, and through to the port and Kwinana industrial areas," Mr Fletcher said.
"The southern section from Guildford Road to Reid Highway will deliver new intersections of Collier Road and Morley Drive.
"A flyover to take Benara Road over Tonkin Highway and upgrades of Tonkin Highway north of Guildford Road to freeway standard of six lanes are also included.
"Construction is expected to begin in the middle of this year."
WA Transport Minister Dean Nalder said Tonkin Highway carried more than 70,000 vehicles per day and completion of the southern section would result in freer-flowing traffic, with impacts similar to the $986 million Gateway WA project.
"Fewer traffic lights means vehicles keep moving and travel times improve, resulting in less congestion on local roads. It also enhances road safety," Mr Nalder said.
"The freeway-standard, free-flowing link from Collier Road through to Reid Highway via the Tonkin Freeway grade separations will greatly ease traffic growth on local roads and remove four of the State's top 15 most dangerous intersections."
The Australian Government is contributing $894 million, and the Western Australian Government $223 million, to the NorthLink WA project.
Transport Minister's office - 6552 6400