About Us

 Our Mission

​To improve the global deployability and sustainment of U.S. Armed Forces by providing the Department of Defense (DoD) with transportation engineering, policy guidance, research, and analytical expertise to support the National Military Strategy.

 TEA History

The Transportation Engineering Agency (TEA) can trace its beginnings back to 1955 when the Office of the Army Chief of Transportation established the Office of the Special Assistant for Transportation Engineering (SATE) in Washington, DC to provide consultant services for existing and proposed Army installations worldwide.  Department of Defense (DOD) Instruction 3224.1, DOD Engineering for Transportability Program, was implemented in 1958, directing the establishment of the DOD Engineering for Transportability Program.  This resulted in the formation of the Transportation Engineering Office (TEO) aligned under the US Army Transportation Research and Engineering Command (USATRECOM) in Fort Eustis, VA.

In 1959, the Army Chief of Transportation authorized the establishment of the Transportability Field Evaluation Center under the TEO.  This field support element was co-located at Fort Eustis and Camp Wallace.  The U.S. Army later agreed to an exchange of the Camp Wallace property with Anheuser-Busch in return for a larger parcel which is located directly across Skiffe's Creek from Fort Eustis.  Camp Wallace then became the southern portion of a well known theme park, Busch Gardens Williamsburg.

The US Army Transportation Engineering Agency (TEA) was established under the Chief of Transportation in 1962 and in 1966 was transferred to the Military Traffic Management and Terminal Service (MTMTS).  Eight years later, MTMTS was re-designated as Military Traffic Management Command (MTMC).

The United States Transportation Command (USTRANSCOM) began official operations in 1987 and MTMC became the Army component command of USTRANSCOM in 1988.  MTMC was re-named the Military Surface Deployment and Distribution Command (SDDC) in 2004.  As such, TEA became SDDCTEA.

The 2005 Base Realignment and Closure (BRAC) Commission recommended relocating TEA’s Newport News, VA facility to Scott Air Force Base.  In the summer of 2007, TEA moved to Scott AFB, IL.  With this move, the Joint Distribution Process Analysis Center (JDPAC) was created in the winter of 2007 as a directorate under USTRANSCOM.  JDPAC is comprised of TEA, AMC A9, and a portion of USTRANSCOM J5/4.  Its mission is to provide analysis and engineering support to improve the nation's ability to move and sustain the Joint Force and operate the Joint Deployment and Distribution Enterprise (JDDE).

 Our Vision

​To be an organization with a performance based reputation for excellence in Transportation Engineering built by a committed workforce that inspires trust and confidence by providing best value solutions to the joint warfighter in supporting improved deployment and distribution capabilities.

 Director's Message

As the premier Department of Defense deployment engineering and analysis center, SDDCTEA employs state-of-the-art computational and analytical tools as well as the most advanced information system technologies to satisfy the Warfighter's total force projection needs. Today's National Military Strategy is built on our ability to rapidly deploy, project and sustain armed forces anywhere in the world. These force projection goals are constantly evolving and becoming ever more demanding. SDDCTEA supports these requirements with timely and accurate deployment and surface distribution-related analyses and transportation engineering solutions.

Our highly motivated team includes civil, mechanical and computer engineers, operations research analysts, transportation specialists, computer specialists, engineering and computer technicians, and a diverse and highly skilled support staff. For us, customer satisfaction is the number one priority.

We are proud to play a key role in ensuring that our military forces can respond successfully to any requirement anywhere in the world.

 TEA Foundational Publications

​List of the Directives and Regulations that govern the Transportation Engineering Agency:

  • DOD Directive 4510.11
    • Assigns Defense Transportation Engineering mission responsibility to USTRANSCOM… delegated to SDDC, further delegated to Director, TEA
    • Establishes the Highways, Railroads, and Ports for National Defense Programs
    • Establishes Transportability Engineering Program/other TEA core missions
    • DOD Manual 4510-12
      • Implements policy, prescribes procedures, and assigns responsibilities for DoD Transportation Engineering and associated programs, including:
        o The Highways for National Defense (HND) Program.
        o The Defense Access Roads (DAR) Program.
        o The DoD Traffic Engineering Program.
        o The Railroads for National Defense (RND) Program.
        o The Ports for National Defense (PND) Program.
      • Prescribes procedures and assigns responsibilities for infrastructure and deployability analyses and installation transportation engineering studies.
  • DOD Instruction 4540.07
    • SDDCTEA is the DOD Secretariat for the Engineering for Transportability Program
    • SDDCTEA is the Land Mode Transportability Agent for DOD
  • AR 70-47
    • Assigns responsibilities and procedures for the Army’s Engineering for Transportability Program
    • TEA provides an Army transportability expert for Source Selection and Evaluation Boards
    • TEA provides transportability approval within 45 days of receipt of final test reports in support of the Milestone C Decision
  • SDDC Regulation 10-1
    • Assigns responsibility for DOD Transportation Engineering Program to Director TEA, with authorities and responsibilities IAW AR 55-80

 Meet Our Director

Mr. Ryan Samuelson - Director

Mr. Ryan Samuelson, a member of the Senior Executive Service, is dual-hatted as the Director of the USTRANSCOM Joint Distribution Process Analysis Center (JDPAC) and Executive Director of the SDDC Transportation Engineering Agency (TEA). He also serves as the Special Assistant for Transportation Engineering to implement DOD policy guidance for highway, railroad, and port for national defense programs.

Full Biography - coming soon


 Contact Us

​1 Soldier Way, Bldg 1900W

Scott AFB, IL 62225



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