69 years ago today, the Mackinac Bridge opened to connect the Upper and Lower peninsulas of Michigan over the Straits of Mackinac. Nicknamed the "Mighty Mac" when it was built, it's still the longest suspension bridge "between anchorages" in the Western Hemisphere. Stretching 26,372 feet (8,038 meters) shore-to-shore, it was designed by David B. Steinman, who grew up in the Brooklyn Bridge's shadow, and hoped to rival its greatness. READ more about Mighty Mac... (1957)
