WBHO infrastructure will be responsible for the entire design phase, and the construction of the 15 lanes located in the Goldfields region.
As well as the creation of the new lanes, works will be undertaken to resurface some parts of the Highway as well as works to widen the highway.
Transport Minister Bill Marmion spoke of the project and the benefits it will have for commuters and the local economy.
“These new lanes will provide safer passing opportunities and reduce driver frustration along 225 kilometres of the highway," Mr Marmion said.
"There will be eight new eastbound lanes and seven new westbound lanes built between Southern Cross and Kalgoorlie, each with an average length of three kilometres.
"Construction is now underway between Kalgoorlie and Southern Cross and the project will provide direct employment for about 100 people."
Regional Development Minister Terry Redman also spoke of the project, highlighting the importance of the Great Eastern Highway to the region.
“"This is the primary east-west freight route for Western Australia, the key route for travel between the Goldfields, Perth and the South-West region; forms part of the Perth-Adelaide National Highway; and is the most direct sealed link between Perth and the Eastern States," Mr Redman said.
"These upgrades will improve travel time and address safety issues that have contributed to vehicle incidents along this road. Royalties for Regions investment in key infrastructure projects is vital to the economic and social development of our regional communities."
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