I-75 (between Grayling, MI and M-32)

This article or section should be merged with Interstate 75.

Built in 1961. This freeway was built by converting the northbound lanes of U.S. Highway 27 to southbound lanes and building a new set of northbound lanes leaving the former southbound lanes as a strip of grass. The terminus of the freeway near downtown Grayling converts to a partial interchange for what would become BL I-75 between that and M-93/Hartwick Pines Road.

Alongside of that, The former segment of US-27 between Grayling and Gaylord, MI turns back to local control. After this individual segment of freeway was completed, it left a gap between Gaylord and Indian River which was filled in a year later. While the gap was being filled in, a special "TO I-75" designation was applied to the former segment of US-27. Around that time, US-27's northern terminus was scaled back to 5 miles south of Grayling until it was redesignated as an extention of US-127 decades after that.