Considered by many as the "8th wonder of the world", the Mackinac Bridge is the longest suspension bridge in the western hemisphere with 7,400' of 4 lane roadway suspended in the air over the beautiful Straits of Mackinac. That's 950' longer than the Golden Gate Bridge in San Francisco. This vital transportation link, which unites Michigan's two peninsulas, is responsible for stimulating tourism and economic growth in northern Michigan. Total length of the bridge, including its approaches, is approximately 5 miles over 34 water piers. Its two main towers extend 552' above the water and go down 210' below the surface of the water to bedrock. Enjoy views of Lake Michigan to the west and Lake Huron to the east. Beautiful Mackinac Island and its Grand Hotel are in plain view from the Mackinac Bridge. Each Labor Day morning, the Mackinac Bridge Authority hosts the famous Annual Mackinac Bridge Walk, which attracts thousands to walk across the 5 mile stretch. Drive across the Mackinac Bridge during the day and watch the Great Lakes freighters cross under the awesome structure or view it at night when the "Mighty Mac" lights up the Straits of Mackinac.