Michigan Department of Transportation is making available a series of four limited-edition posters to celebrate the 50th anniversary of the Mackinac Bridge. "Over time, the bridge has become a beloved Michigan landmark," said state transportation director Kirk Steudle. "We have captured some incredible images of the bridge that we would like to share with the public to commemorate this milestone." The posters, priced US$4 each, can be ordered from www.michigan.gov/mackinacbridge (opens in new window).