The 400-series highways are a network of controlled-access highways in the Canadian province of Ontario, forming a special subset of the provincial highway system. They are analogous to the Interstate
Aerial view of the interchange between Highway 401, 403 and 410 in Mississauga
The Parclo interchange design is used throughout the 400-series network.
Highway 401 Night Lapse Busy
King's Highway 400, commonly referred to as Highway 400, historically as the Toronto–Barrie Highway, and colloquially as the four hundred, is a 400-series highway in the Canadian province of Ontario l
Interchange of Highway 400 and 401, looking towards the south. The exit ramp to Highway 401 westbound is often congested.
Twinning through the "Wahta Gap" in 2007
Widening work in King Township in 2020
Nobel Bypass under construction north of Parry Sound in 2009