 In addition to visitors to Mackinac Island, the bridge has attracted interest from a diverse group of tourists including bridge enthusiasts, bird-watchers, and photographers.The Straits area is a popular sailing destination for boats of all types, which make it easier to get a closer view to the underlying structure of the bridge.On June 25, 1958, to coincide with that year's celebration of the November 1957 opening, the United States Postal Service (USPS) released a 3¢ commemorative stamp featuring the recently completed bridge.