Quote Originally Posted by professorscott View Post
Actually there were two versions of the Gratiot Interurban, if you'd like to call it that, since neither ran all the way along Gratiot to Port Huron. The original line ran along Gratiot then followed roughly 23 Mile Road, M-29 and BL 94 to Port Huron. That was a very long trip, so a new line was developed that cut off part of the M-29 segment [[the new route bypassed Algonac and the St. Clair Flats). The new line was referred to as the Short Cut, and the route partly survives in that there is an east-west road in southern St. Clair County called Short Cut Road, which follows the route, and you can actually see a couple of the old interurban bridges over drains and creeks if you know where to look.

By the way, the map is a wonderful resource. We need to find a way to make this broadly available to local and national street railway historians. [[And urban planners.)
The "local" trains continued to serve Algonac and the other stops along the shore. The express trains used the "short cut" from Fair Haven to Marine City. Not sure if it has been "developed over" but the remains and footprint of the junction at Fair Haven Switch used to be quite apparent.