List of highways related to M-21

List of highways related to M-21

M-21 marker

M-21
Highway system

Michigan State Trunkline Highway System
Interstate • US • State

← M-21 M-21A M-22 →
← M-55 M-56 M-57 →
← M-209 M-210 M-211 →

There are six current and former highways related to M-21 in the US state of Michigan. All of these roads have been part of the M-21 at some point. Of these, two are no longer part of the state trunkline highway system, M-21A and M-210. M-56 is part of M-21 currently, and half of Business M-21 (BUS M-21) is now Business Spur Interstate 196 (BS I-196). Bypass M-21 (BYP M-21) was replaced by M-21, and it is now part of M-11 and M-37/M-44. M-121 was previously an unsigned state highway that was called OLD M-21, but since 2007, it has been signed once again.

Contents

M-21A

M-21A
Location: Flint–Lapeer
Existed: 1929[1][2]–1948

M-21A was an alternate route for M-21 near Flint. M-21A in Flint was turned over to local control in 1948.

BUS M-21

Main article: Business Spur Interstate 196 in Grand Rapids

BUS M-21
Location: Grandville–Grand Rapids


BYP M-21


Bypass M-21
Location: Kent County


M-56

M-56
Location: Genesee County
Existed: 1971[5][6]–1984[3][4]

M-56 was a state highway from 1971 to the mid 1980s that replaced the M-21 designation from M-13 to Flint when the M-21 (now I-69) freeway was built.

When the M-21 designation was replaced with the I-69 designation, the M-56 designation was retired and M-21 was restored in its place. In the 1950s, M-56 was originally numbered on a road from US 25 in Flat Rock to US 112, today US 12, in Canton. Today, this road is known as Huron River Drive and Belleville Road.

M-121

Main article: M-121 (Michigan highway)

M-121
Location: Zeeland–Grandville
Length: 12.763 mi[7] (20.540 km)
Existed: 2007–present

M-121 is a state trunkline highway in the US state of Michigan. A portion of former M-21 in Ottawa County was designated in 2007 as M-121, which was formerly designated as state-maintained "Old M-21". The highway follows Chicago Drive running parallel to I-196. Portions of the four lane divided surface access highway will become four lane undivided as the westbound lanes are shifted south away from unstable soil and parallel train tracks.

M-210

M-210
Location: Pewamo
Length: 1.928 mi[7] (3.103 km)
Existed: 1933[10][11]–1939[8][9]

M-210 served as a loop route through Pewamo starting in 1933. Motorists traveling on M-21 could get on M-210 to go through Pewamo and return to M-21 on the other side of the town, or stay on M-21 and go around the town.[12] Previous to being M-210, the roadway was a part of M-21; it was assigned M-210 when M-21 was shifted to bypass Pewamo.[10][11] The routing was turned over to local control in 1939.[8][9]

References

Portal icon Michigan Highways portal
  1. ^ Michigan State Highway Department (May 1, 1929). Official Highway Service Map (Map). Cartography by MSHD. 
  2. ^ Michigan State Highway Department (January 1, 1930). Official Highway Service Map (Map). Cartography by H.M. Gousha. 
  3. ^ Michigan Department of Transportation (1984). Official Transportation Map (Map). 1 in:14.5 mi/1 in:23 km. Section K12–K14. 
  4. ^ Michigan Department of Transportation (1985). Official Transportation Map (Map). 1 in:14.5 mi/1 in:23 km. Section K12–K14. 
  5. ^ Michigan Department of State Highways (1971). Official Highway Map (Map). 1 in:14.5 mi. Section K12. 
  6. ^ Michigan Department of State Highways (1972). Official Highway Map (Map). 1 in:14.5 mi. Section K12. 
  7. ^ a b "MDOT Physical Reference Finder Application". Michigan Department of Transportation. 2009. http://www.mcgi.state.mi.us/prfinder/. Retrieved February 12, 2011. 
  8. ^ a b Michigan State Highway Department (April 15, 1939). 1939 Official Michigan Highway Map (Map). Cartography by Rand McNally (Summer ed.). Section K10. 
  9. ^ a b Michigan State Highway Department (December 1, 1939). 1939 Official Michigan Highway Map (Map). Cartography by Rand McNally (Winter ed.). Section K10. 
  10. ^ a b Michigan State Highway Department (May 1, 1933). Official Highway Service Map (Map). Cartography by MSHD. 
  11. ^ a b Michigan State Highway Department (September 1, 1933). Official Highway Service Map (Map). Cartography by MSHD. 
  12. ^ Michigan State Highway Department (June 1, 1936). 1936 Official Michigan Highway Map (Map). Cartography by Rand McNally. 

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