Detroit and Mackinac Railway

The Detroit, Bay City & Alpena Railroad, was a 3 ft 2 in (965 mm) narrow gauge short line operated from Bay City northward to the Lake Huron port of Alpena. The line was converted to 4 ft 8+1⁄2 in (1,435 mm) standard gauge in 1886 and was reorganized into the Detroit and Mackinac (D&M) on December 17, 1894. During the late 1890s and the first decade of the Twentieth Century, the timber resources of northeastern Michigan were fully utilized and the D&M expanded its trackage northward from Alpena to Cheboygan. The Bay City-Cheboygan main line prospered, and a stone passenger depot was constructed in Harrisville.

The main constituent of the freight service offered by the D&M and its predecessor railroads was timber from what was then the vast forests of northeastern Michigan; the D&M built spurs and branch lines to the forested areas. The Rogers City Branch served the limestone quarries of Rogers City. In 1922, the railroad also had branch lines to Au Gres, Comins, Curran, Hillman, Lincoln, Prescott, and Rose City.

In the 1940s, D&M had enough revenue to be a Class I railroad and it was one of the first such to eliminate steam locomotives in 1948.

In March 1976, the Detroit & Mackinac acquired a combination of trackage and operating trackage rights from the remains of the bankrupt Penn Central that created an alternate main line from Bay City northward, through Gaylord and Cheboygan, to Mackinaw City. However, adverse economic conditions continued to affect railroad operations in the northeastern United States. The road was sold to the Lake State Railway in 1992, and ended its existence as an independent railroad.

The Detroit & Mackinac called itself the "Turtle Line" and its logo symbol was "Mackinac Mac". The railroad bore the hostile backronym of "Defeated & Maltreated".

Passenger service

The D&M mainline from Bay City to Alpena offered sleeping car and meal services between Detroit and Alpena in the 1930s. Continuing coaches were carried over Michigan Central Railroad tracks from Detroit to Bay City. Separate motor coach trains operating daily except Sunday carried passengers from Alpena to the northern extent of D&M territory, Cheboygan.

By the 1940s, meal services had disappeared. By 1949, service was reduced to a morning trip from Bay City to Alpena and a reverse trip in the evening. Sleeping cars were eliminated. And service from Alpena to Cheboygan was discontinued as well. Passenger service was entirely eliminated by 1951.

Named train passenger service in the mid-1930s consisted of: