 In late 1912, the Great White Way was extended east to Davenport, passing through Pella, Oskaloosa, Washington, and Muscatine.In 1913, when the Iowa State Highway Commission began registering named trails longer than , the Great White Way Association paid the $5.00 fee ($ in dollars) to become the first official registered highway route on July 30, 1914.When the primary highway system was created, the Great White Way was assigned Primary Road No.