In 1969, the Michigan Department of State Highways petitioned the American Association of State Highway Officials (AASHO) to approve a Bus. US 41 designation for the trunkline. Action on the request was deferred by AASHTO's U.S. Route Numbering Subcommittee, and then denied the following year. The western end of Bus. M-28 was rerouted on June 4, 1999, when the City of Ishpeming petitioned MDOT to reroute the highway along Lakeshore Drive to US 41/M-28. Previously, it ran along Greenwood Street and North Lake Road and met US 41/M-28 in the West Ishpeming neighborhood of Ishpeming Township.