Okay, per @Imzadi1979:'s suggestion, I'm focusing on only one road article at a time. Here are some notes just from a first glance.
The M-39/I-94 interchange was rebuilt sometime in the 80s, replacing a very outdated layout. I believe the MDOT maps still showed the old configuration until a few years ago, though. What source could be used here?
The reconstruction of the Willow Run routing near Belleville is noted, but I wouldn't mind a little more specificity, since I believe the freeway was rebuilt to the north, the service drives rerouted, and the Rawsonville, Belleville, and Haggerty exits rebuilt. What could be used here as a source?
Some maps, although I believe not the MDOT ones, show the west I-94 to Carpenter Road ramp still extant after the rest of the exit was obliterated for the current I-94/US-23 interchange. The Carpenter ramp appears on a 1970s USGS map, but I've seen errata on USGS maps before.
Other exits that were rebuilt over time: I-94 and Ann Arbor-Saline Road, I-94 and Maple, I-94 at Michigan in Ypsi, and I-94/Merriman/Middlebelt. Should any be noted?
Chelsea to Grass Lake uses a former routing of US-12 for the westbound lanes. This should probably be noted.
Some improvements were made a few years ago in the Kalamazoo area. I know that the US-131 exit and the Westnedge exit were rebuilt.
There was also an at-grade RR crossing west of US-23 removed in the 60s or so.
Some maps show a partial interchange at Dettman Road in Jackson. Someone once showed me an MDOT document showing plans for an exit here, but I forget where it was since this was over a decade ago.