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Highway 21
Highway 21
Bluewater Highway
	Highway 21 highlighted in red
Route information
	Maintained by the Ministry of Transportation of Ontario
Length	226.8 km (140.9 mi)
Existed	May 23, 1927–present
Major junctions
South end	Highway 402 near Wyoming
	Highway 8 in Goderich; Highway 9 in Kincardine
North end	Highway 6 / Highway 10 / Highway 26 in Owen Sound
Location
Country	Canada
Province	Ontario
Major cities	Grand Bend, Goderich, Kincardine, Southampton, Port Elgin, Owen Sound
Highway system
	Ontario provincial highways; Current; Former; 400-series;
	Former provincial highways

Ontario Highway 21, also called King's Highway 21, is a provincial highway in southwestern Ontario, Canada. It starts near Ontario Highway 402, almost half way between Sarnia and London. It runs north/northeast for 227 kilometres (141 mi) and ends in Owen Sound with Highway 6, Highway 10, and Highway 26.^[2] The roadway is referred to as the Bluewater Highway because it remains very close to the eastern shoreline of Lake Huron.^[3] It was started in 1927 as Highway 3 running across Kent and Lambton Counties.^[2] In 1930 it was extended and renamed King's Highway 21.^[2] It is one of Ontario's most treacherous roads for winter driving. Highway 21 is frequently closed during winter because of snow blowing off Lake Huron.^[4]

References

↑ Whipp 1983, p. 31.
↑ ^2.0 ^2.1 ^2.2 Cameron Bevers (n.d.). "History of King's Highway 21". The King's Highway.ca. Retrieved October 12, 2014.
↑ Alan Tucker, The Penguin Guide to Canada (New York: Penguin, 1989), p. 50
↑ Henry Stancu (December 11, 2012). "Ontario's 10 toughest winter roads". Wheels.ca. Retrieved October 12, 2014.