Wikipedia:WikiProject U.S. Roads/Pennsylvania/Selected article/March 2014

Pennsylvania Route 97 (PA 97) is a state highway in the U.S. state of Pennsylvania. Known for most of its length as Baltimore Pike, the highway runs 9.363 mi from the Maryland state line near Littlestown, where the highway continues as Maryland Route 97 (MD 97), northwest to U.S. Route 15 (US 15) near Gettysburg. PA 97 connects Gettysburg and Littlestown in southeastern Adams County. The highway also links those communities with Westminster and Baltimore. From PA 97's northern end, Baltimore Pike continues toward Gettysburg through the Gettysburg Battlefield Historic District, where it provides access to the Gettysburg Museum and Visitor Center.

Baltimore Pike was built as a turnpike in the early 19th century to connect Gettysburg, Littlestown, and Baltimore. The turnpike was a prominent linear feature during the 1863 Battle of Gettysburg despite not being the focus of a particular skirmish. Baltimore Pike was designated one of the original legislative routes in the early 1910s and became the northernmost part of US 140 in the late 1920s. The U.S. Highway was widened and resurfaced in the 1940s. When the US 140 designation was retired in the late 1970s, the highway became PA 97 to match the adjacent Maryland highway. PA 97's northern end was moved from Gettysburg to its present location at US 15 in the late 1980s.