John Holland has been awarded a contract to construct the $1.12 billion NorthLink WA project.
Minister for Major Projects, Paul Fletcher, said the contract was a step forward in the right direction for the project.
"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," Fletcher said.
"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.”
New intersections are scheduled for construction from Guildford Road to Reid Highway in Collier Road and Morley Drive.
WA Minister for Transport, Dean Nalder, said Tonkin Highway carries more than 70,000 vehicles per day.
"Fewer traffic lights means vehicles keep moving and travel times improve, resulting in less congestion on local roads. It also enhances road safety," 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.”
Construction on the project is expected to begin mid-2016.
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