UNION TOWNSHIP, N.J. — Freedom Road stretches across less than two miles of the rural New Jersey landscape, from a Walmart shopping center on one end to an aging, notorious state-owned complex on the other: the Edna Mahan Correctional Facility for Women. Plagued by violence and sexual assault against incarcerated women, this state prison, a relic of the early 1900s, will soon close. But New Jersey will find a new home for Mahan’s occupants. The …