Ontario Highway 403

Ontario Highway 403

King's Highway 403, also known as Highway 403 or Highway four-oh-three is a 400-series highway in the Canadian province of Ontario that travels between Woodstock and Mississauga, branching off from and reuniting with Highway 401 at both ends and travelling south of it through Hamilton and Mississauga. It is concurrent with the Queen Elizabeth Way (QEW) for 22 km (14 mi) from Burlington to Oakville. Highway 403 is also known as the Chedoke Expressway within Hamilton. Although the Highway 403 designation was first applied in 1963 to a short stub of freeway branching off of the QEW, the entire route was not completed until August 15, 1997, when the Brantford to Ancaster section was opened to traffic.

The majority of Highway 403 is surrounded by suburban land use, except west of Brantford and between Brantford and Ancaster, where it passes through agricultural land. East of Ancaster, Highway 403 enters Hamilton and descends the Niagara Escarpment. It wraps around the northern side of Burlington Bay to encounter the QEW. From there, it travels straight through Burlington and Oakville with the QEW, departing to the north at the Mississauga–Oakville boundary. The freeway then crosses through the centre of Mississauga in an east–west direction, serving its city centre, before turning north. The highway continues north as Highway 410.