Terrance R. McDonnell

Terrance R. McDonnell
Job Title: 
Principal, Chicago office manager
Professional Credentials: 
BSE, MSE, University of Michigan

In 2007, opened Chicago office of Halcrow Yolles, a structural engineering firm headquartered in Toronto (and a subsidiary of UK-based Halcrow Inc.).

Manages day-to-day operations for the Chicago office and serves on company’s Regional Management Team for North America.

Helped recruit regional directors for transportation business and building services engineering groups, as well as a principal for business development to help company further expand into U.S. marketplace.

Project manager for The Ledge, the all-glass observation boxes at Chicago’s Willis Tower (formerly the Sears Tower). 

Mentored staff in writing of White Paper on sustainable structures, which was presented at the 2011 Structural Engineering Institute Structures Congress.


Board member, Structural Engineers Association of Illinois; inaugural chair, SEAOI Sustainability Committee.

Contributing author, High-Rise Condominium Design and Information Manual.

Adjunct professor, University of Illinois at Chicago (2004).

Off the Clock: 

Can’t live without the Detroit Red Wings going to the playoffs every year—20 years and counting.

Secret Life: 

Mimicks cartoon voices; the Tasmanian Devil is a favorite.