Español

Saint Lawrence Seaway Development Corporation

Working in concert with its Canadian counterpart, the Saint Lawrence Seaway Development Corporation works to operate and maintain a safe, reliable, efficient waterway between the Great Lakes and the Atlantic Ocean.

Contact the Agency or Department

Website: Saint Lawrence Seaway Development Corporation

Address: 1200 New Jersey Ave SE
Suite W32-300

Washington, DC 20590

Phone Number: (202) 366-0091
(315) 764-3200 (Operations)

Toll-free: (800) 785-2779