Provincial Highway 10 follows the road through Caledon as far north as Orangeville. The highway designation formerly continued south through Brampton and Mississauga, but the highway was downloaded through both cities in 1997 due to its increasingly urbanized nature and the presence of the 400-series Highways 410 and 403. Highway 24 followed much of the street's northern section (as well as the central section where it ran concurrently with Highway 10) from near Glen Huron to Collingwood, but was also downloaded (to Simcoe County), as it was deemed by the province to be of insufficient importance to be retained in the highway system, and is now known as Simcoe County Road 124 through that stretch.