Windsor-Detroit

Detroit–Windsor
Metroplex area
View from Ouellette Avenue in Windsor across the river to Detroit's Guardian and Penobscot Building cityscape.
Country	Canada United States
State/Province	Ontario Michigan
Principal cities	Detroit Windsor
Elevation	600 ft (200 m)
Population (2010)
• Metro	5,700,000 (16th)
Time zone	EST (UTC−5)

The Detroit–Windsor region is an international transborder agglomeration comprising the American city of Detroit, Michigan, the Canadian city of Windsor, Ontario, and the Detroit River between them. The Detroit–Windsor area acts as a critical commercial link straddling the Canada–United States border and has a total population of about 5,700,000. It is North America's largest cross-border conurbation.

The Detroit–Windsor area covers the southeastern Michigan counties of St. Clair, Macomb, Lapeer, Genesee, Livingston, Oakland, Washtenaw, Monroe and Wayne; as well as the Southern Ontario City of Windsor and counties of Essex, Lambton, and Kent.

The Detroit–Windsor region is not recognized formally as a single metropolitan area by either the U.S. or Canadian government. If it were, the region would be the eighth most populous urban region in North America. Nevertheless, the communities have been historically tied by several partnerships and agreements, including the Detroit and Windsor Tunnel Corporation, the firm that is owned equally by the City of Detroit and City of Windsor and operates the tunnel. The cities are historically linked through the rise of the auto industry in both countries due to the U.S.-Canadian Auto Pact in the 1960s, and share geopolitical concerns affecting transportation and shared resources, such as the Detroit River. Many federal, state and provincial bi-national agreements affecting trade and border security also link the region. Today, increasing governmental co-operation is being formalized. On June 15, 2012, the construction of a new bridge between Windsor and Detroit was announced in the two cities by Canadian Prime Minister Stephen Harper, Transport Minister Denis Lebel and Michigan Governor Rick Snyder. The bridge announcement was a long-anticipated formalization of a new partnership between Canada and Michigan, with Canada paying the entire Michigan share of the new bridge, including a new interchange with Interstate-75. The joint Royal Canadian Mounted Police and U.S. Coast Guard Shiprider program of marine border security are examples. The increasing interdependence of Detroit–Windsor was recognized by U.S. regional business and government in 2007 when Windsor Mayor Eddie Francis was invited to take part in, and speak at, the annual Mackinac Policy Conference, a committee of regional business and political leaders, developed to address the economic and quality of life issues that matter most to Southeast Michigan.