TOUR HOST BIO:
Justin P. Greenawalt is an architectural historian and historic preservationist with a deep appreciation for the history and development of Pittsburgh and greater southwestern Pennsylvania. Justin is employed within the Cultural Resources practice of Michael Baker International. He is Director Emeritus of Preservation Pittsburgh and a past president of the East Liberty Valley Historical Society. Justin is a graduate of the University of Pittsburgh (B.A. Architectural Studies, 2008) and Columbia University (M.S. Historic Preservation, 2010).
Todd Wilson, MBA, PE, is an award-winning transportation engineer, named one of Pittsburgh Business Times’ 20 Engineers to Know in 2022. He has co-authored two books on Pittsburgh’s bridges, Images of America Pittsburgh’s Bridges and Engineering Pittsburgh a History of Roads, Rails, Canals, Bridges, and More. An engineering graduate of Carnegie Mellon, Todd has extensive knowledge on bridges, having photographed them in all 50 states and 25 countries, and he has presented at many conferences. Check out his Pittsburgh bridge photography on Instagram @pghbridges.