FOR more than a year the Maryborough Correctional Centre has been over capacity, but the State Government denies the centre is unsafe.
At the end of August, there were 557 prisoners in the centre, which has a single-bed capacity of 500.
A Queensland Corrective Services spokeswoman said the centre had the ability to cater for as many prisoners as required.
"The number of single bed cells in no way reflects a correctional centre's capacity," she said.
"Queensland correctional centres are fully scalable to ensure prisoner numbers - which fluctuate for a range of reasons - can be accommodated at any given point in time."
The spokeswoman said the QCS had implemented approaches to safely incarcerate inmates including double stacking within cells, and the use of temporary bunk beds and mattresses in secure cell or residential areas.
"Individual suitability assessments are conducted in all cases where prisoners are considered for placement in a cell with another prisoner," she said.