Loddon Prison Secure Annexe Expansion of the existing prison located at Castlemaine in regional Victoria. Completed in mid-2014, the new 236-bed secure annexe is the first stage of the overall $76 million upgrade and expansion underway at Loddon. The second stage involved an upgrade to the prison’s security system. The Loddon Annexe represents a new type of security classification – restricted minimum – sitting outside the existing prison walls, but with its own secure perimeter. Kane Constructions was awarded this $50 million lump sum contract in late April 2013 with works completed in June 2014.