It travels from State Road 826 ( Palmetto Expressway ) and State Road 924 ( Gratigny Parkway ) on the Hialeah -- Miami Lakes border ( northwest of Miami , Florida ) to Sault Ste. Marie , Michigan , at the Ontario border .
It travels from State Road 826 ( Palmetto Expressway ) and State Road 924 ( Gratigny Parkway ) in Hialeah , Florida ( just west of Miami ) to Sault St. Marie , Michigan , at the Ontario , Canada , border .