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United States Department of Transportation United States Department of Transportation

Great Lakes-St. Lawrence Seaway Study


The 2007 Great Lakes-St. Lawrence Seaway Study sets out observations and key considerations for continuing the success of this productive, safe and reliable waterway in a cost-effective, efficient, and sustainable manner. The study describes the crucial role of the waterway, a resource that flows directly across two provinces and eight states, situated at the axis of the world's largest binational trading relationship between the United States and Canada. The study captures a common determination for the Great Lakes-St. Lawrence Seaway as a sustainable and optimized system for the future movement of goods.


The Great Lakes-St. Lawrence Seaway system is an important element in the North American economy. Marine transportation on the waterway provides shippers with a safe, efficient, reliable and competitive option for the movement of goods. The study provides a variety of recommendations specific to the System, including:

  • Its current role in North American transportation
  • Its dynamic role in the future of North American transportation
  • The importance of optimizing existing Seaway infrastructure
  • The importance of environmental sustainability

Click to learn more about the Great Lakes-St. Lawrence Seaway Study:

Great Lakes - St. Lawrence Seaway Study
Last updated: Thursday, June 12, 2014