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!

Click here to watch the video.

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

4/12/2018

Media Advisory - SLSDC Announces Port Winners of 2017 Season 'Pacesetter Award'
3/15/2018

Opening of the 2018 Navigation Season Announced
1/30/2018

Media Advisory - Final Update on Seaway Closing (January 12, 2018)
1/30/2018

Media Advisory - Restriction of Recreational Activities (January 10, 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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