Ontario Highway 22

King's Highway 22
Egremont Drive
A map of Highway 22   Highway 22   Previous route (1927–1947)
Route information
Maintained by the Ministry of Transportation
Length	46.0 km[1] (28.6 mi)
Existed	July 2, 1927[2]–January 1, 1998[3]
Major junctions
West end	Highway 7 / Highway 79 near Wisbeach
Major intersections	Highway 81 near Strathroy
East end	Highway 4 in London
Location
Country	Canada
Province	Ontario
Highway system
Ontario provincial highways Current Former 400-series
← Highway 21 → Highway 23

King's Highway 22, commonly referred to as Highway 22, was a provincially maintained highway in the Canadian province of Ontario, located between Sarnia and London. Since 1998, the majority of the former route has been known as Middlesex County Road 22 and Lambton County Road 22. It began at Highway 7 and Highway 79 north of Watford and proceeded 46.0 kilometres (28.6 mi) east to Highway 4 in the north end of London. Between those two points, it passed through the small communities of Wisbeach, Dejong, Adelaide, Wrightmans Corners, Hickory Corner, Poplar Hill, Lobo, and Melrose. The highway was located within Lambton County, Middlesex County, and the city of London, and it followed the historic Egremont Road

Highway 22 was designated in 1927 to provide a route between Sarnia and London; until then, the only provincial highway connection between the two cities was a circuitous route via Highway 7 and Highway 4 through Parkhill and Elginfield. The original routing of Highway 22 passed through Watford and Strathroy until a more direct route was established in 1947. The function of Highway 22 was largely supplanted by the completion of Highway 402 throughout the 1970s. Accordingly, it was decommissioned and turned over to local jurisdiction in 1997 and 1998.