The Redgranite Correctional Institution is a medium security adult male correctional institution located in Redgranite, Wisconsin, in the United States. The prison is operated by the Wisconsin Department of Corrections. Groundbreaking occurred on June 18, 1999, and it opened on January 8, 2001. Boldt Construction Company built it for the state at a cost of $52.9 million. https://web.archive.org/web/20060320030733/http://www.wi-doc.com/RGCI%20FY04%20Annual%20Report.pdf