Construction will include new traffic lights at the intersections of McCormicks Road, Taylors Road, Western Port Highway and Evans Road, with an upgrade of the intersection at Cranbourne-Frankston Road.
Shared paths for pedestrians and cyclists will be installed on both sides of Hall Road, as well as new street lighting, safety barriers, road signage and landscaping.
The upgrade will include $54.2 million to remove two roundabouts at Ballarto Road and Cranbourne-Frankston Road on the Western Port Highway, replacing them with traffic lights.
Planning and pre-construction work on both projects will begin in 2019, with major works starting in 2020. Upgrades to the Western Port Highway are expected to be completed by 2020, while Hall Road is expected to be completed by 2023.
Victorian Premier Daniel Andrews said work is underway to widen Thompsons Road and the level crossing has already been removed, which means the government can start to fix the bottlenecks.
“This upgrade will end that constant frustration that local families know all too well,” he said.
Victorian Member for Carrum Sonya Kilkenny said the upgrades with make a difference for locals.
“Anyone who uses these roads will know how badly these upgrades are needed,” she said.