 US 11 continues north on Pennsylvania Avenue , passing North Hagerstown High School . State maintenance of the federal highway resumes and the highway 's name changes to Middleburg Pike at Haven Road just before the highway leaves the city of Hagerstown . US 11 continues north past residential subdivisions in the suburbs of Fountain Head and Orchard Hills . The federal highway passes a Volvo manufacturing plant and intersects Maugans Avenue , which heads west to Maugansville . North of the intersection with Showalter Road , US 11 adjoins the property of Hagerstown Regional Airport . The federal highway curves to the northeast and passes through a tunnel under the airport 's east – west runway . The federal highway curves back to the northwest through an industrial area before resuming its northward course to the Pennsylvania state line . US 11 enters Pennsylvania just south of the federal highway 's intersection with PA 163 ( Mason Dixon Road ) . 
