Slight update on this mostly moribund, but still in place track in Missouri, between St. Louis and Kansas City, from Railway Age:

Central Midland Railway acquired

Progressive Rail Inc. announced today it has acquired the Central Midland Railway, effective
12:01 a.m. CMR operates more than 50 miles between Rock Island Jct. in metropolitan St.
Louis to Union, Mo., and connects to all six Class I carriers serving St. Louis via the Terminal
Railroad Association. Lakeview, Minn.-based Progressive Rail also operates several short lines
lines in Minnesota and one in Wisconsin, handling more than 14,000 carloads annually.

The route has a couple of tunnels and was considered one of the most scenic on the Rock Island, but never saw heavy traffic. Just the east end is operated, the rest unused since the demise of the CRI&P in 1980. I think UP owns the unused part. This was the very first subject we reported on in the new RyPN.