Human Characteristic: Mackinac Bridge

Location: At the Straits of Mackinac on Interstate 75. The bridge connects the upper and lower peninsulas of Michigan.

Date constructed: The bridge opened on November 1, 1957

Purpose: To connect the two peninsulas of Michigan and allow travel between them after a year-round boat service was determined to not be possible.

Other interesting information:

• Third longest suspension bridge in the world.
• It is 5 miles long.
• The bridge had its 100 millionth crossing on June 25, 1998.
• The bridge is also known as the Mighty Mac or Big Mac.
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Image:



Image location on the internet: http://upload.wikimedia.org/wikipedia/commons/9/9c/Mackinac_Bridge.jpg

Sources of information:

• Mackinac Bridge Authority http://www.mackinacbridge.org
• Wikipedia - Mackinac Bridge http://en.wikipedia.org/wiki/Mackinac_Bridge