Same Architect?

Due to the striking similarities between the IAA Building in Bloomington and IDOT's Headquarters in Springfield along I-55 the question has been raised - did they share the same architectural firm?

Despite the very similar look the answer is no. The IAA Building was designed c. 1959 by Graham, Anderson, Probst & White of Chicago who also designed such iconic buildings in the Windy City as the Wrigley Building, Merchandise Mart and Shedd Aquarium. The IDOT Building on the other hand was the creative genius of Ferry and Associates of Springfield. The IDOT Building was designed at least 13 years after the IAA Building but who knows like it's said, "imitation is the highest form of flattery."