Roberta Oldenburg is a design phase manager I at Mortenson Construction. Oldenburg has more than 15 years of experience in design and construction and began working with Mortenson in 2007. Over the past eight years, Oldenburg has worked on many notable Wisconsin projects including the Wisconsin Energy Institute in Madison, Northwestern Mutual Van Buren Office Building in Milwaukee, and the Aurora Medical Center in Summit. Oldenburg is currently working on the Acuity Insurance Corporate Headquarters Expansion in Sheboygan, WI. Back to the full file.