The federal government is holding Queenslanders to "ransom" by only delivering half of a promised $1.6 billion in infrastructure funding before the next federal election, the state government says.
The Morrison government has added another $15 billion to its 10-year infrastructure pipeline for road and rail projects in state and territories.
State Treasurer Cameron Dick was already fuming that South Australia, with a population of 1.77 million, is getting more funding than Queensland with a population of 5.18 million.
He says the budget papers show that just over $800 million will be delivered over the forward estimates, meaning the remainder will come after at least one and possibly two more federal elections.
"Tonight, we have learned the truth: only $807.5 million of that supposed $1.6 billion, barely half of the amount promised, is in this budget," Mr Dick said in a statement.
"Scott Morrison is holding Queenslanders to ransom, saying they'd have to vote for him in at least two more elections before we'd see the money he promised."
He said his state would also receive a smaller amount of federal infrastructure funding than "Liberal states", particularly South Australia which has a less than half of Queensland's population.
"NSW gets nearly twice as much infrastructure investment as Queensland, while a city the size of Rockhampton effectively moves north here across the border," Mr Dick said.
"Scott Morrison's failure to deliver for Queensland is written in black and white in the pages of this budget."