Treasurer Andrew Fraser and Finance Minister Rachel Nolan have announced that Queensland Treasury would investigate natural disaster reinsurance coverage for Queensland.

"Currently, most states don't have coverage for their road assets in their reinsurance policies," Mr Fraser said.

"The reason for this is clear. Damage to road and transport infrastructure for both the Queensland floods and Cyclone Yasi currently stands at almost half the total damage bill of $5.8 billion.

Premier Bligh put the damage to roads at closer to 80% of the total on this week's episode of the ABC's Q&A program, a discrepancy of over $1.5 billion.

"As I have repeatedly stated, getting reinsurance coverage for Queensland is an entirely different proposition than it is for any other state," Mr Fraser said.

"Our state is prone to natural disasters, and the decentralised nature of our population means we have many government buildings and major roads spread across vast areas."

Finance Minister Rachel Nolan said the Queensland Government maintained the policy position that the Natural Disaster Relief and Recovery Arrangements (NDRRA) are the primary mechanism for funding natural disaster reconstruction for every state and territory.

"It is important to note that this is not a commitment for the state to purchase reinsurance. We have an obligation to Queensland taxpayers to seek value for money outcomes, as does every other state and territory government.

"We won't just be writing a blank cheque to the insurance industry," she said.