Skip to main content
U.S. flag

An official website of the United States government

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( LockA locked padlock ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

United States Department of Transportation United States Department of Transportation
Home

Main navigation

  • About Us
  • Explore the Seaway
  • Resources and Publications

Experience the SLSDC!

Providing a safe, secure, and competitive international waterway!

U.S. DEPARTMENT OF TRANSPORTATION

Great Lakes St. Lawrence Seaway Development Corporation

1200 NEW JERSEY AVENUE, SE

WASHINGTON, DC 20590

855-368-4200

About SLSDC

  • About GLS
  • Learn about the Seaway
  • Resources and Publications
  • Contact Us

Explore the Seaway

  • Latest News
  • Seaway Binational Website
  • GLS Facebook

Policies, Rights, and Legal

  • About DOT
  • Budget and Performance
  • Civil Rights
  • FOIA
  • Information Quality
  • No FEAR Act
  • Office of Inspector General
  • Privacy Policy
  • USA.gov
  • Web Policies and Notices
  • Web Standards