Green Bay is an arm of Lake Michigan, located along the south coast of Michigan's Upper Peninsula and the east coast of Wisconsin. It is separated from the rest of the lake by the Door Peninsula in Wisconsin, the Garden Peninsula in Michigan, and the chain of islands between them, all formed by the Niagara Escarpment. Green Bay is some 120 miles (193 km) long, with a width ranging from about 10 to 20 miles ; it is 1,626 square miles (4,210 km2) in area.

The Leo Frigo Memorial Bridge is a bridge on the north side of Green Bay, Wisconsin. It carries Interstate 43 over the Fox River just south of its mouth into Green Bay. Formerly known as the Tower Drive Bridge, it was renamed in 2002 "in recognition and appreciation of Leo Frigo, a civic and philanthropic leader in the Green Bay area. The bridge opened to traffic in 1981. Because of the bridge's height and slope, it is prone to being shut down during inclement weather. The bridge carries roughly 40,000 vehicles per day as of 2015.