Editing Pennsylvania Turnpike (section)

===Delaware River Extension===
{{infobox road small
|state=PA
|type=I
|route=276
|location=[[Upper Merion Township, Pennsylvania|Upper Merion Township]]–[[Bristol Township, Pennsylvania|Bristol Township]]
|length_mi=29.78
|length_ref=<ref name="fhwa">{{cite web |url = https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/?redirect |title = Route Log – Auxiliary Routes of the Eisenhower National System Of Interstate and Defense Highways – Table 2 |publisher = Federal Highway Administration |date = October 31, 2002 |access-date = October 17, 2012 }}</ref>
|length_round=2
|formed=1964
}}
[[File:2022-08-11 17 51 06 View east along Interstate 276 (Pennsylvania Turnpike Delaware River Extension) just east of Interstate 476 (Pennsylvania Turnpike Northeast Extension) in Whitemarsh Township, Montgomery County, Pennsylvania.jpg|thumb|alt=Another stretch of road with sign, photographed from the shoulder|Eastbound, past the Mid-County Interchange with I-476 in Plymouth Meeting]]

At the Valley Forge interchange, the turnpike is designated I-276 and becomes a six-lane suburban commuter highway.<ref name=patpmap/><ref name=gm/><ref name=dakelman123>{{harvp|Dakelman|Schorr|2004|p=123|ps=.}}</ref> It crosses a bridge over [[SEPTA]]'s [[Norristown High Speed Line]] and runs parallel to Norfolk Southern's [[Dale Secondary]] rail line, south of the road. The turnpike crosses Norfolk Southern's [[Harrisburg Line]], the [[Schuylkill River]], and SEPTA's [[Manayunk/Norristown Line]] on the [[Schuylkill River Bridge]] near [[Norristown, Pennsylvania|Norristown]]. The road crosses the [[Schuylkill River Trail]] and Norfolk Southern's Morrisville Connecting Track on the Schuylkill River Bridge before the parallel Dale Secondary rail line runs south.<ref name=ptc1981/><ref name=patpmap/><ref name=gm/>

In [[Plymouth Meeting, Pennsylvania|Plymouth Meeting]], an interchange with [[Germantown Pike]] accesses Norristown before the Mid-County Interchange. This interchange connects to [[Interstate 476|I-476]], which runs south as the Mid-County Expressway (locally known as the Blue Route) and north as the [[Pennsylvania Turnpike Northeast Extension|Northeast Extension]] connecting the mainline to the [[Lehigh Valley]] and the [[Pocono Mountains]].<ref name=patpmap/><ref name=gm/>

After the Mid-County Interchange, the mainline runs east through Philadelphia's northern suburbs. In [[Fort Washington, Pennsylvania|Fort Washington]], it passes over SEPTA's [[Lansdale/Doylestown Line]] before an interchange with [[Pennsylvania Route 309|PA&nbsp;309]]. The road then parallels Norfolk Southern's [[Morrisville Line]], a short distance south. {{convert|1|mi|km|spell=In}} later is a westbound exit and entrance for Virginia Drive. In [[Willow Grove, Pennsylvania|Willow Grove]], it reaches the [[Pennsylvania Route 611|PA&nbsp;611]] exit before crossing SEPTA's [[Warminster Line]].<ref name=patpmap/><ref name=gm/> The turnpike continues through suburban areas, entering Bucks County and a bridge over Norfolk Southern's Morrisville Line<ref name=gm/><ref name=adc/> before crossing SEPTA's [[West Trenton Line]]. In [[Bensalem Township, Pennsylvania|Bensalem Township]] is a bridge over CSX's [[Trenton Subdivision (CSX Transportation)|Trenton Subdivision]] rail line before an interchange with [[U.S. Route 1 in Pennsylvania|US&nbsp;1]], which accesses Philadelphia.<ref name=patpmap/><ref name=gm/>

[[File:PA TPK WB from Gravel Hill Road overpass.jpeg|thumb|alt=Straight, lightly traveled section of six-lane highway|Westbound in [[Upper Southampton Township, Bucks County, Pennsylvania|Upper Southampton Township]]]]

The highway returns to four lanes before an eastbound exit and entrance for [[Pennsylvania Route 132|PA&nbsp;132]]. It then reaches the east end of the closed toll system at the [[Neshaminy Falls, Pennsylvania|Neshaminy Falls]] toll gantry. The road reaches a partial interchange with [[Interstate 95 in Pennsylvania|I-95]], where it crosses under [[Interstate 295 (Delaware–Pennsylvania)|I-295]]; I-295 access is from the westbound turnpike to southbound I-95 and from northbound I-95 to the eastbound turnpike. At this point, I-276 ends and the turnpike becomes part of I-95; signage indicates the westbound turnpike as a left exit from southbound I-95, using I-95 milepost exit number&nbsp;40.<ref name=patpmap/><ref name=gm/>

After joining I-95, the remaining {{convert|3|mi|km|spell=in}} of road uses I-95's mileposts and exit numbers and is not signed as the Pennsylvania Turnpike (although it is still considered part of the mainline). The turnpike reaches its final interchange, accessing [[U.S. Route 13 in Pennsylvania|US&nbsp;13]] near [[Bristol, Pennsylvania|Bristol]]. The road crosses an East Penn Railroad line before the westbound all-electronic Delaware River Bridge toll gantry.<ref name=patpmap/><ref name=gm/> It crosses the [[Delaware Canal]] and Amtrak's [[Northeast Corridor]] rail line before crossing the [[Delaware River]] into New Jersey on the [[Delaware River–Turnpike Toll Bridge]].<ref name=ptc1981/><ref name=patpmap/><ref name=gm/> The Pennsylvania Turnpike ends and I-95 continues east (north) as the [[Pearl Harbor Memorial Turnpike Extension|Pearl Harbor Memorial Extension]] of the [[New Jersey Turnpike]], which connects to the mainline New Jersey Turnpike.<ref name=patpmap/><ref name=gm/><ref name="095sld">{{cite web |url = http://www.state.nj.us/transportation/refdata/sldiag/00000095__-.pdf |title = Interstate 95 straight line diagram |publisher = New Jersey Department of Transportation |access-date = March 26, 2007 }}</ref>