Interlocking: Hart Street Tower, Bay City, MI

Hart Street, in west Bay City, was the crossing of the Grand Trunk Western line northeast (to North Bay City) and the Michigan Central Mackinaw Branch, located just north of West Bay City station and the MCRR Bay City (Saginaw River) swing bridge. Over time, this was a full interlocking with tower, and then downgraded to other forms of crossing protection.

Also called CS&M Crossing on the Michigan Central, the original name of the GTW.