The Michigan Line, sometimes known as the Chicago–Detroit Line, is a railroad corridor which runs from Porter, Indiana to Dearborn, Michigan. It carries Amtrak's Blue Water and Wolverine services.It is owned by Amtrak for 98 miles (158 km) from Porter, Indiana, to Kalamazoo, Michigan, the longest stretch of Amtrak-owned rail outside of the Northeastern U.S.. The 135 miles of the line between Kalamazoo, Michigan to Dearborn, Michigan was purchased by the State of Michigan in early 2013.