The Victorian Labor government has pledged $550 million to upgrade the Western Freeway between Melton and Caroline Springs, promising extra lanes and major interchange works along one of Melbourne’s busiest growth corridors.

Premier Ben Carroll announced the state commitment ahead of November’s Victorian election, saying the project would deliver about 30 kilometres of new traffic lanes, with sections of the freeway expanded to as many as four lanes in each direction.

The Victorian funding comes on top of $1 billion already committed by the federal government to upgrades between Melton and Caroline Springs.

The Commonwealth says more than 86,000 vehicles use the corridor each day, with that number forecast to reach about 113,000 by 2031 as Melbourne’s western suburbs continue to grow.

Under Labor’s plan, the Ferris Road, Leakes Road and Hopkins Road interchanges would be upgraded, while a new half interchange would be built at Mount Cottrell Road to provide local motorists with direct access to and from the freeway.

The government says the upgraded sections would also have a consistent 100 kilometres per hour speed limit.

Mr Carroll said the announcement reflected his government’s renewed focus on basic infrastructure.

“I said as a new premier my first task is to listen to what Victorians’ needs are,” he said.

“They told me very clearly they wanted a relentless focus on the basics and there was nothing more important than getting our road infrastructure right and making sure hard-working Victorians can spend less time in traffic and get to spend more time with their families.”

Federal government already committed $1 billion

The project has been in development for years.

The federal government announced its $1 billion commitment for the Melton-to-Caroline Springs section in March 2025 as part of a broader $1.1 billion investment in the Western Freeway.

At the time, the Commonwealth said the exact upgrades would be determined with the Victorian government following completion of a jointly funded business case.

A further $50 million in federal funding for pre-construction work was announced in May this year.

That work includes detailed planning and design, ground investigations and environmental and planning studies before major construction begins.

Mr Carroll said that planning meant the project was already moving forward and the new $550 million commitment represented Victoria “coming to the table as well”.

The announcement would bring the combined state and Commonwealth commitments for the Melton-Caroline Springs upgrade to about $1.55 billion, although the final scope, staging and construction timetable will depend on planning and funding arrangements.

Population boom putting pressure on roads

The announcement comes amid growing pressure on governments to provide infrastructure at the same pace as housing and population growth in Melbourne’s west.

The City of Melton describes itself as Australia’s fastest-growing municipality and says its population is forecast to almost double to about 456,000 over the next two decades.

The Victorian government has also set the municipality a target of another 109,000 homes by 2051.

Melton recorded annual population growth of 6.61 per cent in 2022-23, according to council data.

That expansion has increasingly exposed the gap between new housing development and transport infrastructure.

Melton City Council said in July that years of underinvestment had left residents dealing with congested roads, overcrowded trains and long daily commutes.

It has made transport one of its major issues ahead of November’s election, calling on political parties to commit to upgrades to the Western Highway and Hopkins Road, as well as electrification and duplication of the Melton rail line.

Council has previously warned the Western Highway was not equipped for the scale of development planned along the corridor, arguing additional lanes and upgraded interchanges were needed to accommodate population growth while maintaining freight movements.

Hopkins Road among major pressure points

The proposed upgrade of the Hopkins Road interchange is likely to be particularly important for residents around Truganina, Tarneit, Mount Cottrell and surrounding growth areas.

Melton council has repeatedly identified Hopkins Road as requiring urgent investment, including duplication to address congestion and safety concerns.

The Western Freeway is also more than a suburban commuter route.

It forms part of the main road connection between Melbourne and Adelaide and connects with major Victorian freight routes including the Midland, Sunraysia, Pyrenees, Henty and Wimmera highways.

The federal government has described the corridor as critical to both passenger travel and freight productivity.

Transport becomes election battleground in Melbourne’s west

Labor’s announcement comes as transport infrastructure in Melbourne’s west emerges as a major battleground ahead of the state election.

The Liberal-Nationals opposition this week pledged $1.7 billion for 25 hybrid-electric trains for the Melton and Wyndham Vale corridors if it wins government, arguing western suburbs commuters have waited too long for suburban-quality rail services.

Labor, meanwhile, is seeking to demonstrate that road and rail infrastructure in the west will be a priority under Mr Carroll’s leadership.

The government has already highlighted the opening of the new Melton Station and other works along the Melton rail corridor, while the federal and Victorian governments have committed $152.7 million for development work supporting future electrification of the Melton line.

But the scale and speed of population growth means infrastructure remains a potent issue for western suburbs voters.

Melton City Council says housing growth cannot occur in isolation from transport investment, warning that residents are already experiencing congestion, safety concerns, long travel times and inadequate public transport.

For Labor, the $550 million Western Freeway commitment is therefore both an infrastructure announcement and an election pitch to communities that have spent years arguing roads and public transport have failed to keep pace with Melbourne’s expansion.

Mr Carroll said the objective was straightforward: increase capacity and allow residents to spend less time stuck in traffic.

For voters in Melton and Melbourne’s rapidly expanding outer west, the question heading into November will be whether the latest commitments can finally close the gap between population growth and the infrastructure needed to support it.

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