[5] At the official opening of the $89 million modernization in 2001, the Ontario government described the complex as the first facility in Ontario's correctional system to feature a new design with pods:[6] self-contained, 192-bed units where inmates spend their day - including program areas and an outdoor space for exercise.

[8] It shares its location with the adjacent Vanier Centre for Women, a 333-bed medium and maximum security facility for remanded and sentenced female offenders.

The prison provides a variety of remedial programs, including life skills, addictions, anger management and Alcoholics Anonymous.

A riot at Maplehurst Correctional Centre in Milton occurred in 1979, during which 18 convicts escaped from the facility.

[9] In 2021, the Ministry of Labour issued nine orders of unsafe work conditions after an outbreak of COVID-19 was declared at the institution.