Colin Rohlfing
When he thinks about sustainabiity, he tends to think big
29, Sustainable Design Director
HOK
Chicago

In 2009, Colin Rohlfing coordinated sustainability efforts among 1,500 architects, engineers, consultants and some 25,000 site workers involved in constructing the world’s largest LEED-NC Platinum project: the King Abdullah University of Science and Technology campus in Saudi Arabia. As HOK’s director of sustainable design, Rohlfing oversees design across several practice areas.

Julianne Scherer
Her mastery of management has made her master among tradesmen
40, Associate Principal
Nagle Hartray Architects Ltd.
Chicago

Julianne Scherer leads Nagle Hartray’s largest projects because she sees them from the perspectives of the client. She’s an accomplished facilitator, diplomat and manager, colleagues say.

Anna Stern
Young attorney rises to VP
30, Vice President
Tri-North Builders Inc.
Fitchburg, Wis.

After graduating from law school and practicing construction law for five years, Anna Stern joined contractor Tri-North Builders as a vice president of daily operations. Throughout her career, Stern has trained and mentored young attorneys and educated construction professionals about several aspects of construction law, including liens, green building, AIA contract documents, and ConsensusDOCS.

David T. Weihing
He brings a human touch to design
38, Vice President
Thornton Tomasetti Inc.
Chicago

David Weihing has a reputation for listening carefully and sharing insights that bring designs to life. He also is noted for his mastery of BIM and REVIT.

 

Andy Wiegman
He uses his engineering expertise to guide large projects
37, Construction Executive
Mortenson Construction
Brookfield, Wis.

Andy Wiegman provides strategic direction while overseeing large projects such as Miller Park scoreboard renovations and SC Johnson Co.’s Fortaleza Hall.