The "spread median" on I-96 between Dobie Rd. and Meridian Rd. was to be the southern interchange for the abandoned Van Atta Connector. Here's a right-of-way map, showing where the ramps would be as well as when the land was acquired and ultimately sold off.
http://mdotcf.state.mi.us/public/ROW...m/sheet062.pdf
Another spread median, on I-75 between Flushing Rd. and Pasadena Ave., was to be the northern interchange for I-475 before plans changed.
http://mdotcf.state.mi.us/public/ROW...E/sheet015.pdf
The M-DOT ROW maps contain a wealth of info about the history of road development in Michigan.