An Iconic Engineering Marvel On November 1, 1957, the Mackinac Bridge officially opened to traffic, marking a monumental achievement in engineering despite the many challenges posed by the turbulent Straits of Mackinac. Spanning an impressive 26,372 feet, this iconic bridge connects Michigan’s Upper and Lower Peninsulas and stands as a testament to human ingenuity and determination. The Specs Its total length is 5 miles, or 26,372 feet. The main towers rise 552 feet above the water. The roadway sits 199 feet above the water at midspan. There are 42,000 miles of wire in the main cables. The cables weigh 11,840… Read More »







