The Prince William – Manassas Regional Adult Detention Center began operations on April 15, 1982 with the opening of the Main Facility. This new regional jail facility replaced a County jail. The Modular Building was added and has been in operation since April 27, 1990. The Iron Building, which houses the Work Release and Electronic Incarceration Program, was added and has been in operation since June 30, 1989. The Central Facility became fully operational on Dec. 10, 2008. The operational capacity of the facility is 667. Together these four buildings make up the facilities of the Prince William – Manassas Regional Adult Detention Center, which is currently managed by Superintendent Colonel Pete Meletis.