AARoads:United States/Michigan/1926 renumbering

There was one small one removing most duplicates (except ones that were extensions of U.S. Highways with the same number) and all highways that overlapped with U.S. Highways. Alexlatham96 (talk) 17:06, 27 January 2018 (UTC) Here's what happened:

M-10: replaced by US 24 from the Ohio state line to Dearborn, US 112 from Dearborn to Detroit, US 10 from Detroit to Saginaw, and US 23 from Saginaw to Mackinaw City

M-11: replaced by US 12 from Indiana to St. Joseph, US 12/US 31 from St. Joseph to Watervliet, and US 31 from Watervliet to Mackinaw City; reassigned to new route from Napoleon to Saline

M-12: replaced by US 2 from Ironwood to Crystal Falls, M-69 from Crystal Falls to Sagola, and an extended M-45 (now M-95) from Sagola to Iron Mountain

M-13: replaced by US 131 from Indiana to the Fife Lake area and M-131 from the Fife Lake area north to Cross Village; reassigned as a renumbering of part of M-19 from Brockway to Avoca

M-14: replaced by US 127 from Jackson to Lansing and US 27 from Lansing to Cheboygan

M-15: replaced by US 41 (except between Negaunee and Marquette, where M-15 was replaced by an extended M-28 and US 41 followed part of M-35 and new highway)

M-16: replaced by US 16

M-17: replaced by US 12 from Watervliet to Ann Arbor, and by US 112 from Ypsilanti to Detroit; instead extended over M-23 from Ypsilanti to Detroit instead

M-19: replaced by US-25 from Detroit to Port Huron, and by M-21 from Port Huron to Goodells, by M-13 from Brockway to Avoca, eliminated from Avoca to Goodells, and replaced by M-83 from three miles east of Bad Axe to Port Austin; rerouted on new road south of Brockway

M-20: replaced by US 10 west of Midland and rerouted west via M-24 and extended over part of M-41

M-21: extended southwest, replacing M-51 from Grand Rapids to Holland

M-23: replaced by US 112 from White Pigeon to Ypsilanti, and by M-17 from Ypsilanti to Detroit

M-24: replaced by US 10 east of Midland and M-20 west of Midland; reused on part of M-36 from Pontiac to Lapeer and on a new route from Vassar to Bay City

M-25: replaced by M-28 from Skandia to Sault Ste. Marie

M-26: extended north, following US 41 from Laurium to Mohawk and replacing M-83 from Mohawk to Gay.

M-27: replaced by M-29 from Chesterfield to Port Huron, M-51 from Port Huron to Carsonville, M-83 from Carsonville to Harbor Beach, and by M-29 from Harbor Beach to Port Austin

M-28: extended to Sault Ste. Marie over former M-25 (now partially M-94)

M-29: replaced by US 27 from Indiana to Lansing; reassigned to former M-27 from Chesterfield to Port Huron, M-31 from Port Huron to Harbor Beach, M-27 from Harbor Beach to Port Austin, a new route from Port Austin to Bayport, M-19 from Bayport to Bad Axe, M-31 from Bad Axe to Unionville, and M-81 to Bay City.

M-31: replaced by M-29 from Port Huron to Harbor Beach, M-83 from Harbor Beach to Bad Axe, and M-29 from Bad Axe to Unionville, M-84 from Unionville to east of Reese, and M-81 from east of Reese to Saginaw

M-34: truncated; replaced by US 127 from Ohio to Adrian

M-36: truncated; replaced by M-24 from Pontiac to Lapeer, rerouted on new route north of North Branch, section from North Branch east replaced by M-90

M-38: truncated; section from Marlette to Burnside concurrent with M-53 removed; section from Burnside to Peck replaced by M-90

M-41: southern half became part of M-20, and the remainder was renumbered M-82

M-45: extended south from Sagola replacing part of M-12, concurrent with US 2, and replaced M-75 south to Wisconsin

M-48: extended via US 2 to Garnet, and north replacing M-84 to McLeod's Corner, concurrent with M-28 to Newberry, and replacing M-82 to Four Mile Corner

M-51: replaced by M-21 from Grand Rapids to Holland; reused as a renumbering of M-27 from Port Huron to Carsonville

M-57: replaced by M-75 from Boyne Falls to Walloon Lake; reused on new route from Quinnesec to Wisconsin

M-58: replaced by US 31 from Indiana to St. Joseph; reused on bypass in Pontiac by 1930

M-65: replaced by US 23 from Ohio to Flint

M-69: replaced by US 2 from Wisconsin to Crystal Falls and US 102 from Crystal Falls to Covington and reassigned as a renumbering of part of M-12 from from Crystal Falls to Sagola, is concurrent with M-45 from Sagola to Randville, and as a renumbering of all of M-90 from Randville to Hardwood

M-75: replaced by M-45 from Kingsford to Wisconsin; reused as a renumbering of M-57

M-80: replaced by US 127 from Adrian to M-14

M-81: rerouted over M-31 to Saginaw; old route to Bay City transferred to M-29

M-82: replaced by M-48 from Newberry to Four Mile Corner; reassigned as a renumbering of part of M-41

M-83: replaced by M-26 from Mohawk to Gay, and reassigned as renumbering of part of M-31 from Harbor Beach to Bad Axe

M-84: replaced by M-48 from Garnet to McLeod's Corner; reassigned as a renumbering of part of M-31 from south of Gilford to Unionville

M-90: replaced by M-69 from Randville to Hardwood; reassigned on a new alignment from west of North Branch to North Branch, replaced part of M-36 from North Branch to M-53, and part of M-38 from M-53 to M-19 in Peck

Note, the above listing has been corrected in places. Additionally, not all duplicate numbers were removed. M-24 was used as a state highway extension of US 24 north of Pontiac, and a new M-131 was designated as an extension of US 131. Since 1926, M-10, M-25, and M-27 have been restored to the highway system. Additionally, M-8, M-45, and M-112 have been used, duplicating then existing US Highway designations. M-33 was not renumbered when US 33 was extended into Michigan, although M-45 was removed for a time due to the proximity to the new US 45. M-102 and US 102 may have also been assigned at the same time.) Imzadi 1979 → 00:11, 28 January 2018 (UTC)