M-31 (Michigan highway)

This article is about a former Michigan state trunkline highway numbered M-31. For the U.S. Highway, see U.S. Route 31 in Michigan.

M-31 marker
M-31
Map
M-31 highlighted in red on a modern map
Route information
Maintained by MDOT
Length166.910 mi[3] (268.616 km)
Existedc. July 1, 1919[1]–c. November 11, 1926[2]
Major junctions
South end M-21 in Port Huron
Major intersections M-19 in Bad Axe
North end M-10 in Saginaw
Location
CountryUnited States
StateMichigan
CountiesSt. Clair, Sanilac, Huron, Tuscola, Bay, Saginaw
Highway system
←
Bus. US 31		→ M-32

M-31 was a state trunkline highway in the Lower Peninsula in the US state of Michigan. It generally ran north from Port Huron along the Lake Huron shoreline through The Thumb region before turning inland. The highway crossed The Thumb and then ran along the Saginaw Bay shoreline before running inland again, terminating at Saginaw. It was one of the original state highways signposted in 1919, but it was renumbered as other highways in 1926, decommissioning the designation in the process. Parts of its route are now M-24, M-25, M-81 and M-142.

  1. ^ Michigan State Highway Department (July 1, 1919). State of Michigan (Map). Scale not given. Lansing: Michigan State Highway Department. Lower Peninsula sheet. OCLC 15607244. Retrieved October 17, 2019 – via Michigan History Center.
  2. ^ Cite error: The named reference MSHD26-12 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference PRFA was invoked but never defined (see the help page).