Contact Us

To communicate with us, please use the Feedback Form.We commit to responding to your feedback by:

  • acknowledging receipt of your feedback
  • resolving the issue in a timely fashion, if possible
  • conducting further investigation, if required (some issues are more complex, and may take longer to resolve)
Call 911
For business development or an enquiry about commercial cargo:
Email: [email protected]
Call: 905-641-1932 extension 5438
Ask to speak with “Corporate Communications”.
Canada: 613-932-5170 ext. 2249
email [email protected]
U.S.A.: 202-366-0091

Have a question? Check out our FAQ. It may have the answer you’re looking for!

Feedback Form

Office Locations
The St. Lawrence Seaway Management Corporation (Canada)
Head Office
202 Pitt Street
Cornwall, Ontario
Canada K6J 3P7
Tel: 613-932-5170
Fax: 613-932-7286
Operations Centre Quebec
151 Écluse Street
St. Lambert, Quebec
Canada J4R 2V6
Tel: 450-672-4110
Fax: 450-672-7098
Operations Centre Ontario
508 Glendale Avenue
St. Catharines, Ontario
Canada L2R 6V8
Tel: 905-641-1932
Fax: 905-682-4525
Please note that calls may be recorded for quality assurance and training purposes.

Office Locations
Great Lakes St. Lawrence Seaway Development Corporation (U.S.A.)
Policy Headquarters

U.S. Department of Transportation

1200 New Jersey Ave, SE Suite W62-300
Washington, DC
USA 20590
Hours: 8:00 a.m. to 5:00 p.m.
Tel: 800-785-2779
or 202-366-0091
Fax: 202-366-7147
Operations Headquarters
180 Andrews Street
Massena, New York
USA 13662
Hours: 8:00 a.m. to 4:30 p.m.
Tel: 315-764-3200
Fax: 315-764-3235