The foundation of the roadway dates back to the 1870s when the
Chicago, Milwaukee, St. Paul and Pacific Railroad acquired the right-of-way of the stream bed to lay down tracks. The "Short Line," as it was called, was one of the main
interurban routes that served Saint Paul and its railroad suburbs on its way to
Minneapolis at the turn of the 20th century. With the advent of the
TCRT streetcar system in the 1910s, the line was redundant and was converted to heavy rail by the CMSPP, though it still carried passenger trains between the
Saint Paul Union Depot and the
Milwaukee Road Depot in neighboring
Minneapolis. In the 1960s, the city of Saint Paul began construction on the Short Line Road, envisioning a below-grade, limited access direct link between I-35E and I-94. In April 2024
MnDOT misspelled the I-35E exit for Ayd Mill Road accidentally installing a sign that read "Ady Mill Road". ==Current status==