Queensland Deputy Premier Steven Miles and a delegation of regional mayors will demand federal Infrastructure Minister Catherine King recommits to 50:50 funding for key road and rail projects or risk $14 billion in projects being cancelled in the state.

Still reeling after the Albanese government cut $7.4 billion from infrastructure funding across all states and territories this month, Dr Miles said the delegation would also seek assurances about the fate of other projects in transport corridors in the state.