In Saginaw, Mackinaw Street closely follows Poole's route in the general direction of present-day Midland until the western city limits, where Mackinaw Street twists north, becoming Mackinaw Road and following a section line into Bay County.
Within this term two different Mackinaw boats evolved: one for use on the upper Great Lakes, and the other for use on the upper Missouri River and its principal tributaries.
It is believed that the Mackinaw River was named in the early 19th century in honor of an unnamed fur trader from Mackinac Island, Michigan who traded goods at or near the river.
After the death of Dufaux, M. Levadoux had frequent occasion to minister to the spiritual wants of the Native Americans and of other scattered Catholics from Sandusky and Mackinaw to Fort Wayne.
The Marinette shipyard, Marinette Marine, built the first Freedom class littoral combat ship for the United States Navy, and the United States Coast Guard Cutter Mackinaw.