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

10/7/2019

Press Release - Coast Guard Responds to Vessel Grounding in the St. Lawrence Seaway
9/20/2019

Media Advisory - U.S. Secretary of Transportation Elaine L. Chao to Commemorate St. Lawrence Seaway’s 60th Anniversary Celebration
9/10/2019

Media Advisory - U.S. Secretary of Transportation Elaine L. Chao to Commemorate St. Lawrence Seaway’s 60th Anniversary Celebration
8/26/2019

Dwight D. Eisenhower Visitors' Center New Hours for Next Week Closes for Season on Labor Day

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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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