A third major Melbourne children's hospital would be built in the city's outer west under a pre-election pledge from the Victorian coalition.
In another promise ahead of the November poll, Opposition Leader Matthew Guy has announced the Liberal Nationals intend to invest $900 million to build a new 275-bed Royal Children's Hospital campus in Werribee.
It would include an emergency department and be run by the Royal Children's Hospital.
The proposed facility's final location and services would be determined after consultation with the RCH and communities in the City of Wyndham, one of the fastest-growing areas in the state.
It is the 11th major hospital construction or redevelopment commitment made by the coalition for the November 26 election, as it attacks the Andrews government's management of the health system.
"This vital hospital is a real solution to fix the health crisis and will mean better healthcare, closer to home, for Wyndham communities and surrounding areas," Mr Guy said.
Opposition health spokeswoman Georgie Crozier said the Liberals and Nationals have a comprehensive plan to deliver the healthcare Melbourne's west deserves.
"The health infrastructure shortages across this area are now critical," Ms Crozier said.
The opposition has vowed to shelve Labor's multibillion-dollar suburban rail loop to redirect money to fix the state's embattled health system.
Premier Daniel Andrews and other Victorian Labor ministers have panned the move, declaring the government can do both.
On Thursday the state government announced two new respiratory clinics for children will open by the end of next month.
They will offer free treatment and be located near the Royal Children's Hospital in Parkville and Monash Children's Hospital in Clayton.
The clinics are expected to see up to 150 patients a week and operate after 6pm on weekdays.
Premier Daniel Andrews said they were designed to take pressure off overloaded hospitals.
"Kids with respiratory illnesses are presenting to emergency departments in record numbers, and with spring just around the corner, we know demand for these services will continue," he said in a statement.