Adams County PA 116 begins at an intersection with
PA 16 in the borough of
Carroll Valley in
Adams County, heading north on two-lane undivided Fairfield Road. The road heads through forested areas with some housing developments to the west and the
Liberty Mountain Resort to the east. The route runs through a mix of fields and residential subdivisions before heading into
Hamiltonban Township and turning northeast through rural areas with some commercial development. PA 116 continues into the borough of
Fairfield and passes homes along Main Street. The route heads back into Hamiltonban Township and becomes Fairfield Road again, continuing through agricultural areas with some woods and homes. The road enters
Highland Township and passes through more rural areas, curving more to the east. PA 116 crosses the
Marsh Creek into
Cumberland Township, running through more farmland before rural residential and business development. The road runs near portions of
Gettysburg National Military Park prior to entering the borough of
Gettysburg and becoming West Middle Street. The route heads into residential areas and turns east, reaching the commercial downtown. Upon coming to the intersection with
US 15 Bus. adjacent to the
Adams County Courthouse, PA 116 turns north to form a
concurrency with that route for a block on Baltimore Street. At the Lincoln Square
traffic circle, PA 116 splits from US 15 Bus. and turns east to join
US 30 on York Street, passing more downtown businesses. US 30 splits to the northeast and PA 116 continues east on Hanover Street, heading into residential areas. The route crosses the
Rock Creek into
Straban Township and becomes Hanover Road, running near a portion of Gettysburg National Military Park as it heads into areas of woods and farms with a few homes. The road comes to a
diamond interchange with the
US 15 freeway and continues through more agricultural areas with some residences as it continues into
Mount Pleasant Township. Farther east, PA 116 enters the borough of
Bonneauville and passes homes along with a few businesses. The route heads back into Mount Pleasant Township and passes through more farmland with occasional development, running through Square Corner. The road runs through a portion of
Union Township and briefly becomes the border between Mount Pleasant Township to the north and Union Township to the south before crossing the South Branch
Conewago Creek into
Conewago Township. PA 116 runs through Brushtown and heads through a mix of farmland and residential development prior to curving northeast into the borough of
McSherrystown. Here, the road becomes Main Street and is lined with several homes. PA 116 turns southeast onto 3rd Street, becoming the border between McSherrystown to the west and Conewago Township to the east. The route curves east fully into Conewago Township, passing several residences in the community of
Midway. The road intersects the northern terminus of
PA 516 and turns north, crossing the West Branch Codorus Creek into the borough of
Spring Grove. Here, PA 116 becomes Main Street and runs through an industrial area, crossing a York Railway line. Farther north, the route heads into residential and commercial areas, crossing another York Railway line. After a
roundabout at Hanover Street and Roths Church Road, the road forms the border between Spring Grove to the west and
Jackson Township to the east, passing more development. PA 116 fully enters Jackson Township, where the name becomes Hanover Road, and crosses the York Railway again, continuing northeast through agricultural areas with a few housing developments as it passes through Nashville. The route continues into
West Manchester Township and reaches its eastern terminus at an intersection with US 30. ==History==