Contrecœur is a city in southwestern Quebec, Canada on the south shore of the St. Lawrence River. The population as of the Canada 2021 Census was 9,480. Contrecœur is approximately 45 kilometres (28 mi) northeast of Montreal and is accessible via Autoroute 30, the main road from the southwest, which continues on to Sorel-Tracy.

Autoroute 30 (A-30), or the Autoroute de l'Acier is an Autoroute in Quebec, Canada. Construction of the A-30 dates back to the early days of autoroute construction in the 1960s. Originally called Highway 3, the A-30 was designed to replace Route 132 as the main artery linking the communities along the South Shore of the St. Lawrence River. The A-30 was originally intended to begin at the U.S. border near Dundee and end at Saint-Pierre-les-Becquets. In the late 1970s an eight-year moratorium on new autoroute construction in favour of public transport by the Parti Québécois prevented implementation of that plan.