 Urbanization began in central Etobicoke in the 1950s post war boom with growing residential areas in Islington and to the north and industrial growth to the south.This led to Etobicoke's incorporation which separated from the County of York to form a part of the new Metropolitan Toronto in 1954, reincorporating the lakeshore municipalities into that level of government.With growing traffic along Dundas and increasing traffic fatalities in Islington, the intersections of Royal York Road and Kipling Avenue with Dundas St. W. were redesigned as highway style interchanges with bridges.