Whats 5 miles long, 500 feet tall and turns 60 today? The Mighty Mac! The Mackinac Bridge opened to traffic on November 1, 1957., opens a new window We've been testing our newest 3D printer by printing mini versions of the bridge, using a design created, opens a new window by Thingiverse user Brad Nicholls, opens a new window. Great design Brad!
Add a comment to: Mackinac Bridge Turns 60!