 As the highway approaches the city of Traverse City, the roadway runs downhill and weaves back and forth across the Leelanau – Grand Traverse county line.M-72 merges with M-22 to run concurrently in the section of Traverse City in Leelanau County and immediately cross the county line into Grand Traverse County.The two highways run along Grandview Parkway, a four-lane boulevard on the shore of the West Arm of Grand Traverse Bay.