GLS Contact Information
Editorial Category: About Header: Contact the GLS Name: Great Lakes St. Lawrence Seaway Development Corporation (GLS) Title: Headquarters Division: U.S. Department of TransportationAddress:
1200 New Jersey Ave, SE W62-300
Washington, DC 20590
United States
Alt Phone: 800-785-2779
Fax: 202-366-7147
Business Hours: 8:00am-5:00 pm ET, M-F
If you are deaf, hard of hearing, or have a speech disability, please dial 7-1-1 to access telecommunications relay services.