Florida State Prison (FSP), otherwise known as Raiford Prison, is an American correctional institution located in unincorporated Bradford County, Florida, with a Raiford postal address. It was formerly known as the "Florida State Prison-East Unit" as it was originally part of Florida State Prison near Raiford. The facility, a part of the Florida Department of Corrections, is located on State Road 16 right across the border from Union County. The institution opened in 1961, even though construction was not completed until 1968. With a maximum population of over 1,400 inmates, FSP is one of the largest prisons in the state. FSP houses Florida's one of two male death row cell blocks and the State of Florida execution chamber. Union Correctional Institution also houses male death row inmates while Lowell Annex houses female death row inmates. Inmates however are moved to Florida State Prison for "Death Watch" after their death warrant is signed by the governor of the State of Florida to await execution.