Editing Pennsylvania Turnpike (section)

===Philadelphia Extension===
[[File:2022-07-31 12 16 28 View west along Interstate 76 (Pennsylvania Turnpike Philadelphia Extension) just west of Exit 320 in Charlestown Township, Chester County, Pennsylvania.jpg|right|thumb|alt=Two empty lanes of a highway, with wispy clouds|Westbound, past the PA&nbsp;29 interchange in Charlestown Township]]

The turnpike heads east through a mixture of rural land and suburban development approaching Harrisburg, passing over Norfolk Southern's Shippensburg Secondary rail line. In [[Upper Allen Township, Pennsylvania|Upper Allen Township]], the [[U.S. Route 15 in Pennsylvania|US&nbsp;15]] interchange accesses [[Gettysburg, Pennsylvania|Gettysburg]] on the south and Harrisburg on the north. The road passes over Norfolk Southern's [[Lurgan Branch]] rail line before entering [[York County, Pennsylvania|York County]] and the interchange with [[Interstate 83|I-83]] serving Harrisburg, its western suburbs, and [[York, Pennsylvania|York]] on the south.<ref name=patpmap/><ref name=gm/><ref name=adc/>

East of I-83, the turnpike widens to six lanes and crosses over Norfolk Southern's [[Port Road Branch]] rail line, the [[Susquehanna River]], [[Amtrak]]'s [[Philadelphia to Harrisburg Main Line|Keystone Corridor]] rail line, and Norfolk Southern's Royalton Branch rail line on the [[Susquehanna River Bridge]]. In [[Dauphin County, Pennsylvania|Dauphin County]], the road is a bypass south of Harrisburg.<ref name=gm/><ref name=adc/><ref name=pn51807/>

An interchange with the southern end of [[Interstate 283|I-283]] and the western end of [[Pennsylvania Route 283|PA&nbsp;283]] serves Harrisburg's eastern suburbs in [[Lower Swatara Township, Pennsylvania|Lower Swatara Township]] and [[Harrisburg International Airport]]; PTC headquarters are adjacent to the interchange. The road returns to four lanes through suburban development north of [[Middletown, Dauphin County, Pennsylvania|Middletown]], passing over the [[Middletown and Hummelstown Railroad]] and [[Swatara Creek]] into rural areas.<ref name=patpmap/><ref name=gm/> and crossing a corner of [[Lebanon County, Pennsylvania|Lebanon County]] before entering [[Lancaster County, Pennsylvania|Lancaster County]].<ref name=adc/>

The highway passes through [[Pennsylvania Dutch Country]]<ref name=dakelman94>{{harvp|Dakelman|Schorr|2004|p=94|ps=.}}</ref> to an interchange with [[Pennsylvania Route 72|PA&nbsp;72]], accessing [[Lebanon, Pennsylvania|Lebanon]] on the north and [[Lancaster, Pennsylvania|Lancaster]] on the south. It passes over an [[East Penn Railroad]] line in [[Denver, Pennsylvania|Denver]] before an indirect interchange with [[U.S. Route 222|US&nbsp;222]], which serves [[Reading, Pennsylvania|Reading]] and Lancaster. The route continues into [[Berks County, Pennsylvania|Berks County]] to an interchange with the southern terminus of [[Interstate 176|I-176]] (a freeway to Reading) and [[Pennsylvania Route 10|PA&nbsp;10]] in [[Morgantown, Pennsylvania|Morgantown]] which accesses [[Pennsylvania Route 23|PA&nbsp;23]].<ref name=patpmap/><ref name=gm/><ref name=adc/>

The turnpike enters [[Chester County, Pennsylvania|Chester County]], running southeast<ref name=patpmap/><ref name=gm/><ref name=adc/> to an exit for [[Pennsylvania Route 100|PA&nbsp;100]] north of [[Downingtown, Pennsylvania|Downingtown]] and the western suburbs of Philadelphia; an interchange with [[Pennsylvania Route 29|PA&nbsp;29]] is near [[Malvern, Pennsylvania|Malvern]].<ref name=patpmap/><ref name=gm/> In [[Montgomery County, Pennsylvania|Montgomery County]] is the [[Valley Forge, Pennsylvania|Valley Forge]] interchange in [[King of Prussia, Pennsylvania|King of Prussia]], where I-76 splits from the turnpike and heads southeast as the Schuylkill Expressway toward Philadelphia; this interchange accesses [[U.S. Route 202 in Pennsylvania|US&nbsp;202]] and [[U.S. Route 422|US&nbsp;422]].<ref name=patpmap/><ref name=gm/><ref name=adc/>