Thursday is Flag Day in the United States and the Mackinac Bridge is celebrating by flying a MASSIVE American flag from the bridge.
The flag normally flies on holidays as people converge up north, specifically on Memorial Day, the Fourth of July and Labor Day.
— MDOT - Traverse Area (@MDOT_Traverse) June 14, 2018
Flag Day celebrates the anniversary of the Flag Resoluton of 1777, according to USFlag.org. It was officially designated as a holiday in 1949 when President Harry Truman signed an act of Congress.