The highway was also a part of the Western Mainline of the Dixie Highway in Michigan, another auto trail that was built starting in 1915. In 1916, the northern junction between the West Michigan Pike and the East Michigan Pike, which served as the connection for the two mainlines of the Dixie Highway in Michigan in Mackinaw City, was marked with a stone monument at the junction of Central Avenue and Huron Street. By the middle of 1921, the trail used about of roadways along its western branch parallel to Lake Michigan. Michigan led all other states in the Dixie Highway Association by 1922 at improvements to its sections of the roadway.