He was a Professor of Highway Engineering at Texas A&M University for several years and was also a Captain in the Army Engineers for a short period during World War I.  After the war he was a testing engineer for the Pittsburgh Testing Laboratory at Birmingham, Alabama moving on to a managerial role in a concrete products company in Birmingham.

In 1924 he became an associate professor and the Professor of Highway Engineering and Transportation at the University of Michigan.  At the time of his election he was the first mid-westerner to serve as President of ITE.  He was also a Founder of ITE in 1930 and a Vice President for two years, 1934 to 1936.  He was a Director from 1931 to 1933.

Professor Morrison also did part time consulting and made numerous contributions to the professional journals.  He was a member of the American Society of Civil Engineers, Association of Asphalt Paving Technologists and was a Honorary Fellow of the Institute of Highway Engineers.  He also took time out to serve on the Ann Arbor City Council during his long career.