Saint Lawrence Seaway

United States Department of Transportation

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Experience the SLSDC!

Providing a safe, secure, and competitive international waterway!

A ship at port

Experience the U.S. locks!

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Experience the U.S. locks!

The U.S. Eisenhower and Snell Locks in Massena, N.Y.
Experience the Great Lakes-Seaway System!

North America's "Highway H2O"!
Great Lakes, Great Opportunities: An Introduction to SLSDC

Learn about the Saint Lawrence Seaway Development Corporation!

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The Seaway Today

Learn about who we are & what we do
History of the Seaway

Discover why the Seaway is a unique DOT presence
Maritime Community Resources

See why the Seaway is important

Latest Updates

7/19/2018

Press Release - 2018 Great Lakes-St. Lawrence Seaway Economic Impact Study
7/19/2018

2018 Great Lakes-St. Lawrence Seaway Economic Impact Study
7/18/2018

Economic Impact Study
5/25/2018

Media Advisory - Seaway Visitors' Center Opens May 25, 2018

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What Are You Interested In?

Interactive shipping map and schedule
Timeline of the St. Lawrence Seaway and the SLSDC
Visitors' Center
Careers at the SLSDC

Would you like to learn more? Are you a shipper? Please visit the Great Lakes Seaway System Binational Web Site

U.S. DEPARTMENT OF TRANSPORTATION

Saint Lawrence Seaway Development Corporation

1200 NEW JERSEY AVENUE, SE

WASHINGTON, DC 20590

855-368-4200

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