Advancing Surface Deployment and Distribution Analyses

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Since 2001, GeoDecisions and Gannett Fleming have partnered with the U.S. Transportation Command and Military Surface Deployment and Distribution Command Transportation Engineering Agency (SDDCTEA) to provide the Ports for National Defense (PND) program with seaport throughput study updates and GIS services. These projects facilitate surface deployment and distribution analyses and support transportation engineering. We provide the Department of Defense (DOD) community with accurate and responsive seaport capability data, vulnerability assessments, and projected workload analyses to meet defense peacetime and contingency movement needs.

As part of our agreement, project teams conduct seaport site visits to collect data and determine the rail infrastructure capabilities of seaports throughout the U.S. We meet with railroad companies to determine their ability to serve the U.S. Army in the event of a wartime situation that requires extensive military cargo shipments through commercial seaports.  Annually, 10 seaports are studied throughout the U.S.

Did you know that the Alaskan Railroad Corporation, a Class II railroad company, is the only rail provider that services Alaska? All military cargo shipped through the state is shipped on the company’s trains from Seward to Fairbanks.


Enhanced PND studies combine strategic seaport infrastructure with SDDCTEA’s GIS databases while analyzing ports and technology. The ports and installation database, which contains GIS data, is used in IRRIS and can be searched by name to access relevant reports. Studies identify the critical infrastructure for each port, and assess port component impact ratings. This allows deployment planners, port operators, and transportation analysts to make timely decisions that support strategic seaport requirements.

Key Points

  • PND Support
  • Infrastructure analyses
  • Data assessments
  • IRRIS Implementation.