Born in Wellman, Iowa, Roethlisberger went to school in Tennessee. He was a farmer in the Town of Verona, Dane County, Wisconsin. Roethlisberger served on the Dane County Board of Supervisors, was chairman of the Verona Town Board, and served on the school board.
Roethlisberger served in the Wisconsin State Assembly from 1945 to 1949 and was a Republican.
Hi died in a hospital in Madison, Wisconsin.