United States Penitentiary, Florence ADMAX

The United States Penitentiary, Florence ADMAX is a federal supermax prison in Fremont County, Colorado. Cells measure roughly 7 by 12 feet (2 by 3.6 meters), fitted with reinforced steel doors and narrow windows, along with built-in furniture designed to resist modification or removal.

The Federal Bureau of Prisons opened this high-security facility in November 1994 following violent incidents at other federal institutions during the 1980s. The agency sought to create a site where exceptionally dangerous inmates could be held without risk to staff or fellow prisoners.

The facility enforces a rigid daily routine in which prisoners eat meals inside their cells and venture outdoors only in small secured yards. All contact between inmates is prevented, so each person spends most of the day alone with little chance for social interaction.

Visitors must complete extensive background checks and provide identification documents before entering the facility. Rules specify which items and clothing are allowed during the visit, and any deviation may result in denial of access.

Cells are fitted with automated sliding doors controlled remotely from a secure post, so staff avoid direct contact with inmates during routine operations. This design minimizes risks of violence while maintaining constant surveillance of every section.

Location: Fremont County

Inception: November 1994

Official opening: November 1994

Part of: Federal Correctional Complex, Florence

Website: https://bop.gov/locations/institutions/flm

GPS coordinates: 38.35639,-105.09528

Latest update: December 2, 2025 20:34