 The American Association of State Highway and Transportation Officials approved the removal of the US 140 designation on October 28, 1977.In December 1978, the borough of Littlestown protested the renumbering of US 140 to PA 97.When the US 140 designation was retired on January 1, 1979, it was replaced by MD 140 from Baltimore to Westminster, and Maryland and Pennsylvania coordinated to have matching routes 97 on both sides of the state line between Westminster and Gettysburg.