The Mackinac Bridge, also known as the “Mighty Mac”, spans an impressive 4.99 miles (8.03 km) – that’s 26,372 feet! One of the world’s longest bridges! It crosses 155 feet (47.24m) over the Straits of Mackinac between Lake Michigan and Lake Huron. The bridge connects the cities of St. Ignace and Mackinaw City in Michigan’s Mackinac County and is an entry point the Lake Superior Circle Tour. This toll bridge was built in 1957, prior to it’s construction the way to get across was by ferry. It is not uncommon for some people to feel gephyrophobia which is anxiety or phobia characterized by the fear of bridges. The Mackinac Bridge Authority offers a “Drivers Assistance Program” that provides drivers for those who are uncomfortable with driving over the bridge. Every Labor Day thousands participate in the annual Mackinac Bridge Walk that has been running since the year after it’s construction in 1958. For any further information about the bridge contact the Mackinac Bridge Authority at 906-643-7600 or visit their website.