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United States Department of Transportation United States Department of Transportation

Meet Our Team

Responsible for the construction, operation, and maintenance of the part of the St. Lawrence Seaway between Montreal and Lake Erie that falls within the territorial limits of the United States, the mission of the GLS is fulfilled at its policy headquarters in Washington, D.C. and its operational headquarters in Massena, N.Y.

Policy Headquarters - Washington, D.C.

  • Deputy Administrator - Craig H. Middlebrook
  • Executive Officer - Martin Welles
  • Budget Officer - Kevin O'Malley
  • Staff Assistant - Mary Hollomon

Office of the Chief Counsel

  • Chief Counsel - Carrie Mann Lavigne

Office of Congressional and Public Relations

  • Director - Nancy Alcalde

Office of Trade and Economic Development

  • Director - Rebecca Yackley

Operational Headquarters - Massena, N.Y.

  • Associate Administrator - Gary Croot
  • Manager of Equal Employment Opportunity, Labor Relations and Employee Development - Julie Kuenzler

Office of Human Resources

  • Lead - Tammy Finnegan

Office of Finance and Administration

  • Director and Chief Financial Officer - Lisa Healy

Office of Engineering and Maintenance

  • Director - Jeffrey Scharf

Office of Lock Operations and Marine Services

  • Director - Chris Guimond

Great Lakes Regional Office - Milwaukee, Wisconsin

Office of Trade and Economic Development

  • Great Lakes Regional Representative - Peter Hirthe
Last updated: Thursday, June 17, 2021