I-75 Project By Norm Magnusson

On December 21, 1977, I-75 was complete from Tampa to Sault Ste. Marie with a segment opening north of Marietta, Georgia. The final stretch of Interstate 75 was completed in 1986 in Dade (present Miami-Dade) and Broward Counties in Florida, but the last stretch to receive the I-75 signage was a reconstructed (rebuilt with more lanes) Alligator Alley on November 25, 1992.
On July 15, 2009, a fuel tanker exploded under an overpass on 9 Mile Road in Hazel Park resulting in the overpass collapsing onto I-75.