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February 23, 2021

ACEC Chair-Emeritus John Hennessy Passes Away

John Hennessy, who served as 2008-2009 ACEC Chair, died on February 21 after a long illness.

Hennessy began his career in the New York Office of Syska Hennessy as a project mechanical engineer and worked on numerous projects including the Jacob Javits Convention Center in New York. In 1989, he assumed the position of CEO of Syska Hennessy Group.

As ACEC Chair and in subsequent years, Hennessy guided ACEC’s initial forays into social media.

He was actively involved in numerous philanthropic and charitable organizations, including 31 years of support and leadership at The Salvation Army.

Donations in his honor can be made to the American Heart Association or a charity of your choice.

All comments to blog posts will be moderated by ACEC staff.


February 23, 2021



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