 There is an interchange north of the toll plaza that marks the eastern end of US 2 in the state and the southern end of BL I-75.The LMCT departs I-75 to follow US 2 while the LHCT follows BL I-75 through town.The freeway curves around Chain Lake and the Mackinac County Airport and meets the northern end of the business loop near Castle Rock; the LHCT returns to I-75 at that interchange as well.