Four Adelaide hospitals will be targeted for upgrades under a $123 million election commitment from the state government.
The spending is part of a $500 million boost to health under the sector's $7.85 billion budget.
The new projects include $29 million for a 24-bed Geriatric Evaluation and Management unit at the Repatriation Hospital, $20 million to expand the emergency department at the Noarlunga Hospital and $22.5 million for a 16-bed dementia unit at the Modbury Hospital.
Extra beds will also be provided at the Lyell McEwin hospital where the government says a further $5 million will be spent to expand clinical and support services, including car parking.
"Our health system has performed exceptionally well during the (COVID-19) pandemic and this additional investment will ensure we are able to continue to build a stronger future for all South Australians," Premier Steven Marshall said.
"We have embarked on a full compass hospital expansion with significant upgrades at major hospitals in the north, south, east and west of Adelaide either committed to or under way."
But the opposition said the government's announcement had been rushed out in response to Labor's recent health commitments including funds for 300 more hospital beds, 300 more nurses and 100 more doctors.
"This has all the hallmarks of a half-baked announcement rushed out by a desperate premier in a flat panic," opposition health spokesman Chris Picton said.
On Thursday, Labor announced an extra $2.4 million to support South Australians living with motor neurone disease.
SA voters go to the polls on March 19.
