The Mackinaw Bridge, also known as the Mackinac Bridge, is a suspension bridge that connects the Upper and Lower Peninsulas of Michigan. Spanning approximately 5 miles, it is one of the longest suspension bridges in the world and was completed in 1957. The bridge is a vital transportation link, allowing vehicles to cross the Straits of Mackinac. The Mackinaw Bridge features two towers that rise 552 feet above the water, with a main span of 3,800 feet. It is a popular landmark and attracts tourists who enjoy its stunning views and the surrounding natural beauty. The bridge is also known for its unique design and engineering significance.