At that intersection, the trunkline meets the northern end of M-22, which is running concurrently with M-72 along the parkway. As US 31/M-37 turns east to run along the bay north of downtown, the highway merges with M-72 and picks up the LMCT again. Grandview Parkway runs between the Boardman River and the bay. Near the mouth of the river, US 31/M-37/M-72 turns to follow Front Street along the remainder of the bay's shoreline. At Garfield Avenue, M-37 turns northward to run up the Old Mission Peninsula, and US 31/M-72 continues across the base of the peninsula to the East Arm of the Grand Traverse Bay. The highway runs north of the Cherry Capital Airport near the east arm as it angles southeasterly to Traverse City State Park. East of the park, the trunkline exits suburban Traverse City and rounds the bay to run northward along its eastern shore. In the community of Acme, M-72 turns eastward while US 31 continues north past the Grand Traverse Resort.