Detroit and Mackinac Railway

Detroit and Mackinac Railway

D&M 25011, now on display at the Great Overland Station in Topeka, Kansas
Overview
Reporting mark	D&M, DM
Locale	eastern Michigan, along or near Lake Huron
Dates of operation	1894–1992
Successor	Lake State Railway
Technical
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge

The Detroit and Mackinac Railway (reporting marks D&M, DM), informally known as the "Turtle Line", was a railroad in the northeastern part of the Lower Peninsula of the U.S. state of Michigan. The railroad had its main offices and shops in Tawas City with its main line running from Bay City north to Cheboygan, and operated from 1894 to 1992. In 1946, it became the first all diesel haul railroad in the United States.^[1]

At the end of 1925 it incorporated 375 miles of road and 470 miles of track; that year the Turtle Line reported 81 million ton-miles of revenue freight and seven million passenger-miles. In 1967 it reported 124 million ton-miles on 224 miles of road.