When Alcatraz Federal Penitentiary officially closed on March 21, 1963, the remaining 27 inmates were transferred to various federal prisons across the United States. The majority were sent to the newly opened United States Penitentiary (USP) Marion in Illinois, while others were relocated to high-security facilities in Atlanta, Leavenworth, and McNeil Island.
The closure of Alcatraz marked the end of an era in American penology. For 29 years, the island fortress in San Francisco Bay served as the ultimate destination for the nation’s most incorrigible and dangerous criminals. However, by the early 1960s, the "Rock" had become an unsustainable relic of an older correctional philosophy. Understanding where these prisoners went—and why the transition was necessary—requires a deep look at the logistical, economic, and systemic shifts within the Federal Bureau of Prisons (BOP) during that period.
The Final Days of the Rock: Why the Transfer Was Necessary
The decision to close Alcatraz was not a sudden one, nor was it based on a single event. While the famous June 1962 escape of Frank Morris and the Anglin brothers certainly highlighted potential security flaws, the primary drivers were financial and structural. By 1963, the facility was literally crumbling into the Pacific Ocean.
Structural Decay and Environmental Factors
The very environment that made Alcatraz a perfect prison—the harsh, salty mist of the San Francisco Bay—was also its greatest enemy. The reinforced concrete structures, built largely by military prisoners in the early 20th century, were not designed to withstand decades of saltwater saturation. By the 1950s, the steel reinforcement bars (rebar) inside the concrete were rusting and expanding, causing the walls and ceilings to "spall" or flake away.
In 1961, engineers estimated that it would cost approximately $3 million to $5 million (over $30 million in 2026 dollars) just to make the prison safe for continued occupancy. This did not include modernizing the facilities to meet new correctional standards. Furthermore, because the island had no natural source of fresh water, every gallon had to be barged in at immense cost.
The Economic Burden
Running Alcatraz was nearly three times as expensive as running a standard federal prison on the mainland. In 1963, the daily cost per inmate at Alcatraz was roughly $10.00, compared to $3.00 at USP Leavenworth. Attorney General Robert F. Kennedy, tasked with streamlining the Department of Justice, found this disparity impossible to justify, especially as the Bureau of Prisons sought to move toward a more modern, rehabilitative model of incarceration.
The Logistics of the Great Departure: Moving America's Most Dangerous Men
The transfer of the final inmates was a high-stakes operational challenge. The Bureau of Prisons had to move men who were considered the most "escape-prone" and violent in the federal system without incident and under the scrutiny of the national media.
Operational Security and the "Silent" Transfer
The final transfers occurred in waves. The largest and most publicized group left on March 21, 1963. The process was meticulously planned:
- Restraint Protocols: Inmates were fitted with "black box" handcuffs, leg irons, and belly chains. This was the standard for high-security transfers, ensuring that even if a prisoner managed to pick a lock, they remained physically hampered.
- Transport Segments: Prisoners were led from their cells to the dock, loaded onto the prison launch (the McKean), and taken to the mainland. From there, they were moved into heavily guarded buses and eventually onto planes or trains bound for their final destinations.
- The Role of the U.S. Marshals: While BOP correctional officers handled internal security, the U.S. Marshals Service coordinated the logistics of the interstate movement, ensuring that the transition between jurisdictions remained secure.
The Final Man Out: Frank Weatherman
The last prisoner to walk off the island was Frank Weatherman, Inmate #1576. A convicted gun smuggler and multiple escapee from other institutions, Weatherman famously remarked to the gathered press, "Alcatraz was never no good for nobody." His departure signaled the functional end of the island as a correctional facility, leaving only a skeleton crew of guards to secure the property before its handoff to the General Services Administration (GSA).
Primary Destinations: Where the Inmates Landed
While the 27 men who left on the final day are the most famous, the "emptying" of Alcatraz actually occurred over several months. The Bureau of Prisons distributed these men based on their security needs, medical requirements, and remaining sentence lengths.
USP Marion: The Spiritual Successor
The most significant destination was USP Marion in Illinois. Opened in 1963, Marion was specifically designed to take over the role of Alcatraz. It was the first "Level 6" facility, a precursor to the modern "Supermax" prison. Unlike the decaying ruins of the Rock, Marion featured advanced electronic surveillance, a more efficient layout, and a focus on "controlled" movement. Many of the most difficult Alcatraz inmates were sent here to populate the newly formed "Control Unit."
USP Atlanta and USP Leavenworth
For those who were considered high-risk but not necessarily "incorrigible," the older, massive federal penitentiaries in Atlanta and Leavenworth were the primary choices. These facilities were "walled" cities—massive structures with high capacities.
- USP Atlanta: Received several inmates who were nearing the end of their sentences or who had demonstrated improved behavior.
- USP Leavenworth: Known for its strict discipline and industrial work programs, Leavenworth took in prisoners who were capable of working in the Federal Prison Industries (UNICOR) programs.
USP McNeil Island and USP Lewisburg
A smaller number of inmates were sent to the Pacific Northwest (McNeil Island, Washington) or the Northeast (Lewisburg, Pennsylvania). These transfers were often motivated by the desire to place inmates closer to their families or legal counsel, a consideration that was rarely afforded to those originally sent to the isolation of Alcatraz.
Comparing Post-Closure Facilities: A Data Overview
The following table compares the primary facilities that inherited the Alcatraz population in 1963, highlighting their capacity and primary security focus.
| Facility Name | Location | Security Level (1963) | Primary Role for Alcatraz Transfers |
|---|---|---|---|
| USP Marion | Illinois | Maximum (Supermax precursor) | Handling the "most dangerous" and disruptive inmates. |
| USP Atlanta | Georgia | High | Housing long-term inmates with high security needs. |
| USP Leavenworth | Kansas | High | Focus on vocational training and industrial labor. |
| USP McNeil Island | Washington | Medium-High | Serving West Coast inmates nearing release. |
| USP Lewisburg | Pennsylvania | High | Managing East Coast-based high-security populations. |
Life After The Rock: The Transition to Mainland Incarceration
The transition from Alcatraz to mainland prisons was often a shock for the inmates. While the physical conditions at Leavenworth or Marion were often "better" in terms of modern plumbing and heating, the social dynamics were vastly different.
The Breakdown of the "Alcatraz Aura"
On the island, there was a specific, grim hierarchy. Being an "Alcatraz Man" carried a certain weight in the federal system. However, when these men were integrated into the much larger populations of Atlanta or Leavenworth, that status often led to conflict. Younger inmates looked to challenge the older Alcatraz veterans, leading to a spike in violence in the recipient facilities during the mid-1960s.
Psychological Impact of the Move
Interestingly, some inmates found the move to the mainland more stressful. Alcatraz was quiet. The "Rule of Silence," though officially abolished in the 1930s, remained a cultural staple of the island. The mainland prisons were loud, crowded, and chaotic by comparison. The loss of the individual cell—standard at Alcatraz—was a significant adjustment for men who had spent a decade or more in solitary or semi-isolated conditions.
The Evolution of the Supermax Concept
The closure of Alcatraz and the subsequent transfer of its inmates to USP Marion eventually led to the modern "Supermax" era. In 1983, after the killing of two correctional officers at Marion, the facility was placed on permanent "lockdown." This became the model for the administrative segregation units we see today.
The legacy of the Alcatraz transfers can be seen in the construction of ADX Florence (the "Alcatraz of the Rockies") in Colorado. Many of the philosophies developed at Marion—which were themselves refinements of the lessons learned at Alcatraz—governed the design of ADX Florence. It is here that the spiritual lineage of the Alcatraz inmate population resides today in 2026.
Related Questions and Historical Clarifications
Were any prisoners released when Alcatraz closed?
No. Every inmate remaining on the island at the time of closure was a convicted felon with remaining time on their federal sentence. While some were closer to their parole dates than others, the closure of the facility did not result in any commutations or early releases. The transfers were strictly a change of venue for their continued incarceration.
Did the 1962 escape cause the prison to close?
The escape of Frank Morris and the Anglin brothers was a significant embarrassment for the Bureau of Prisons and certainly provided a political catalyst for the closure. However, the decision to close the facility had been discussed in Washington as early as 1953. The $5 million repair bill was the ultimate "death knell" for the prison, far more so than the escape attempt.
How were the destination prisons chosen for specific inmates?
The BOP used a classification system based on "detainers" (other pending charges), the nature of the original crime, behavior during the Alcatraz years, and medical needs. For example, inmates with chronic health issues were often sent to Springfield, Missouri, which housed the Medical Center for Federal Prisoners (MCFP).
What happened to the guards after the transfers?
The correctional officers and staff were also transferred. Many were given their choice of location within the federal system, with many moving to the newly opened USP Marion to help establish the security protocols there. Others took positions at the nearby Federal Correctional Institution (FCI) Dublin or the regional office in San Francisco.
Practical Information for Historical Researchers
For those looking to track specific inmates or access the original transfer manifests, the following resources are essential:
- National Archives (NARA): The records of the Federal Bureau of Prisons (Record Group 129) contain the individual inmate files and the "Notorious Offenders" files.
- BOP Inmate Locator: While the online tool focuses on current inmates, historical inquiries can be directed to the Bureau of Prisons Office of Public Affairs for archived data regarding the 1963 transfers.
- Golden Gate National Recreation Area (GGNRA): As the current stewards of the island, the National Park Service maintains a comprehensive database on the prison's operational history.
Final Recommendation for Further Study
If you are researching the specific path of an individual Alcatraz inmate, your first step should be to identify their BOP Register Number. With this number, you can request their "Central File" through a Freedom of Information Act (FOIA) request to the National Archives. This file will contain the specific transfer orders, the reasoning for their destination, and their conduct reports in the years following the closure of the "Rock."
