Booming population and jobs growth is fuelling significant infrastructure spending in the Victorian budget, which will also deliver a $1.4 billion surplus.

In its fourth budget, which comes ahead of a November state election, the Andrews Labor government will spend $13.7 billion on infrastructure, including new roads an rail improvements.

Nearly a billion dollars has already been announced in the law and order sector, including a $689.5 million new maximum security prison, $128.9 million to increase court capacity, funds for new prosecutors and $115 million for police and crime prevention.

The state’s economy has grown by $48 billion since the Andrews government came to power, meaning nearly one-in-seven dollars circulating in the Victorian economy didn’t exist three-and-a-half years ago, Treasurer Tim Pallas said.

“We have the strongest economy in the nation, we have the strongest job growth in the nation,” Mr Pallas said ahead of Tuesday’s budget.