CN is looking to rid itself of 850 miles of track in Wisconsin, Michigan, and Ontario. "Railroad officials did not specify which lines will be marketed for sale to short line operators. But executives say the bulk of the routes on the block are former Wisconsin Central routes in the Badger State and the Upper Peninsula of Michigan."

https://trn.trains.com/news/news-wire/2020/07/21-cn-to-sell-850-miles-of-low-density-lines-in-wisconsin-michigan-ontario