The Great Lakes St. Lawrence Seaway Development Corporation (GLS) is conducting market research to identify qualified sources for an anticipated Architect-Engineering (A&E) Indefinite Delivery Indefinite Quantity (IDIQ) contract. The contract will support maintenance and improvement projects at their facilities in Massena, New York, with tasks potentially including design, inspection, and project management across multiple engineering disciplines. Up to three contracts may be awarded, and interested firms must submit a capability statement and company information by May 13, 2026. No budget amount is specified in this sources sought notice. This is not a solicitation; responses are for planning purposes only.