HIstory of Corrections in the State of Idaho By Jest3022 Jan 1, 1864 US legislature designates the lewsiton jail and the idaho city jail as temporary prisons Jan 1, 1882 Constuction ends on the teritory prison Jan 1, 1973 Old prison decomissioned Jan 1, 1981 population breaks 1000 Jul 29, 1991 population breaks 2000 Jul 29, 2000 Population hits 5000 Jul 29, 2010 Population over 7500