Three 2-8-2s of class F-4, Nos. 550-552, were outshopped by Lima Locomotive Works in 1928. They had cylinder dimensions of 26x30 inches, a boiler pressure of 200 pounds per square inch, and 63-inch drivers. They produced 54,700 pounds of tractive force and weighed 138 tons. They had a grate area of 67 square feet and an evaporative heating service of 3502 square feet. No. 551 of this class, the only surviving C&IM steam locomotive, is at the National Museum of Transportation in suburban St. Louis.