Seeing the potential, the Pere Marquette purchased the Bay City and East Saginaw line in 1867.
In 1953, the Depot was renovated for use by the Greyhound Bus Company, who removed the tower above the roofline, as well as the porte cochere.
At that time, the Great Lakes Center Foundation purchased the Depot and began plans to restore it.
The depot sits on a random ashlar base, and has a low-pitched hipped roof with extended eaves.
The main facade, which once faced the tracks, is asymmetrical with an entry bay containing a rounded arch door on the first floor and four one-over-one double-hung windows on the second.