Quote:In the late 1950s, the Michigan Department of Transportation began studies on how best to replace the aging bridge, with a more modern one, that would accommodate the now much larger ships plying the waterway. It was decided to build what would be become the worlds heaviest aerial lift bridge, which was under construction by 1959, just to the West of the then current bridge. This new bridge, with 4 traffic lanes above, and a railroad crossing below, had it’s ribbon cutting on Saturday, June 25, 1960.