I-75 Project By Norm Magnusson

On the Canadian side, drivers must use a series of city streets in Sault Ste. Marie, Ontario to reach Highway 17, the local route of the Trans-Canada Highway.
History
This limited access highway that was planned in the 1950s roughly follows the general route of many older at-grade highways, including U.S. Route 2, U.S. Route 27, U.S. Route 25, and U.S. Route 41, among others. Some of these older U.S. Routes (several of which are still in existence) previously had replaced the eastern route of the old Dixie Highway.