There are four bridges that cross the Saginaw River in Bay City. Two of them are owned and maintained by the Michigan Department of Transportation while the other two are owned by the city. Those city owned bridges might be sold and tolled.
Bay City was referenced in the category "Bays and Gulfs" during the June 7, 2016 show. The thing is, this isn't the first time that it has happened, and last time, 16 years ago, the clue was almost exactly the same.