M-19 (Michigan highway)

M-19
M-19
	M-19 highlighted in red
Route information
	Maintained by MDOT
Length	85.626 mi (137.802 km)
Existed	c. July 1, 1919–present
Major junctions
South end	I-94 near New Haven
	I-69 near Emmett; M-90 near Peck; M-46 in Sandusky;
North end	M-142 near Bad Axe
Location
Country	United States
State	Michigan
Counties	Macomb, St. Clair, Sanilac, Huron
Highway system
	Michigan State Trunkline Highway System; Interstate; US; State; Byways;

M-19 is a north–south state trunkline highway in the US state of Michigan. The trunkline begins northeast of Detroit at a junction with Interstate 94 (I-94) near New Haven and runs northward to a junction with M-142 just east of Bad Axe in The Thumb region of the Lower Peninsula. The highway runs through mostly rural and agricultural areas, connecting several small communities.

Dating back to the original signposting of the state highway system, M-19 initially connected Detroit with Port Huron and Port Austin in 1919. In late 1926, the routing was altered to shorten it to Bad Axe on the north and Richmond on the south. Additional changes in the 1950s and 1960s updated the highway to finish paving the roadway and extend it southward to its present terminus.

^ Cite error: The named reference PRFA was invoked but never defined (see the help page).
^ 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.

[PRFA-1] Cite error: The named reference PRFA was invoked but never defined (see the help page).

[MSHD19LP-2] 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.

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