|Dates of operation||1909–1968|
|Track gauge||4 ft 8 1⁄2 in (1,435 mm) standard gauge|
The Manistique and Lake Superior Railroad (M&LS) was an American Class III railroad serving the Upper Peninsula of Michigan from 1909 to 1968. It provided service from Manistique, Michigan to a junction with the Duluth, South Shore and Atlantic Railway at Doty, Michigan, southeast of Munising, Michigan. Its nickname was The Haywire.
The M&LS was chartered in 1909 to penetrate what was then a booming lumber and pulpwood region of the central Upper Peninsula. Almost from the start, it served as an affiliate of the Ann Arbor Railroad and was connected with the larger railroad's northwestern terminus at Elberta, Michigan, by Ann Arbor Railroad car ferry. The Elberta-Manistique run was one of the longest regularly scheduled railroad car ferry runs operated in North America.
The M&LS connected with the Duluth, South Shore and Atlantic Railway in Shingleton, just east of Munising, and with the Lake Superior and Ishpeming Railroad at Doty, as well as with the Soo Line in its headquarters of Manistique.
After the old-growth timber of the central U.P. had been harvested, the transportation needs of the local area served by the Manistique & Lake Superior declined. While the cold, swampy region continued to yield pulpwood, the construction of M-94 generally parallel to the M&LS right-of-way further reduced the need for the little railroad. By the 1960s, the Manistique & Lake Superior had been reduced to only one working locomotive. The railroad and its car ferry ceased operations in July 1968.
In 1970, the abandoned railroad grade was adapted to serve as the Haywire Grade Rail Trail, one of Michigan's first rail trails. The 32-mile-long Haywire Trail follows most of the former railroad's right-of-way from Manistique to Shingleton. A graded, unpaved trail, the Haywire is adapted for snowmobiles and hikers, and is sub-standard for bicycle use. In 2017, mile markers were installed.
- Hornstein, Hugh A. (2005). The Haywire: A Brief History of the Manistique and Lake Superior Railroad. East Lansing, Mich.: Michigan State University Press.
- "Michigan's Haywire Grade Rail Trail Gets New Mile Markers". MyNorth.com. MyNorth Media. November 20, 2017. Retrieved May 13, 2018.
Michigan's first rail trail, the Haywire Grade, debuted in 1970.