Editing Interstate 376 (section)

===Route designations prior to 2009===
[[File:Interstate 376 - Pennsylvania (4164405272).jpg|thumb|left|The western end of I-376 at I-279 in Pittsburgh in 2003.  Upon its extension in 2009, the END panels were replaced with WEST panels]]
From PA&nbsp;60 to I-376's eastern terminus, I-376 has had the US&nbsp;22 and US&nbsp;30 designations for its entire history (US&nbsp;30 exiting at Wilkinsburg). Until 1961, it also carried the [[Pennsylvania Route 80|PA&nbsp;80]] designation until that route was [[Decommissioned highway|decommissioned]] due to Pennsylvania needing the designation for [[Interstate 80 in Pennsylvania|I-80]] to the north. In 1956, PA&nbsp;60 was commissioned to have the Airport Parkway and the former alignment of US&nbsp;22 and US&nbsp;30 to Pittsburgh's West End.

From 1959 to 1964, I-70 occupied the highway east of [[Pennsylvania Route 50|PA&nbsp;50]] in [[Carnegie, Pennsylvania|Carnegie]].<ref name="1960map"/> When I-70 moved to its current alignment (replacing I-70S) in 1964, the route received the [[Interstate 76 in Pennsylvania|I-76]] designation into Pittsburgh.<ref name="76 history">{{cite web |first= Richard |last= Weingroff |work= Ask the Rambler |url= https://www.fhwa.dot.gov/infrastructure/i76.cfm |title=Was I-76 Numbered to Honor Philadelphia for Independence Day, 1776? |date= April 7, 2011 |access-date= August 20, 2011}}</ref> West of Pittsburgh, from 1963 to 1970, [[Interstate 79 in Pennsylvania|I-79]] occupied the route. In West Middlesex, the route would receive the PA&nbsp;18 designation while the former alignment would receive a [[business route]] designation as PA&nbsp;18 Business, since it served as a bypass of West Middlesex.<ref>{{cite web |last=Kitsko |first= Jeffrey J. |url= http://www.pahighways.com/state/PA1-50.html#BUSPA18 |work= Pennsylvania Highways |title= PA&nbsp;1–PA&nbsp;50 |date= March 17, 2010 |access-date= August 20, 2011}}{{sps|certain=yes|date=September 2018}}</ref>

In 1970, I-79 swapped positions with [[Interstate 279|I-279]], necessitating that I-76 be extended to I-79. With commencement on the Beaver Valley Expressway in 1971, PA&nbsp;60 was extended to its future northern terminus in Chippewa. Finally, on October 2, 1972, after I-76 west of Monroeville moved to the [[Pennsylvania Turnpike]] and replaced I-80S, the western part of the highway took the I-279 designation while the section from Pittsburgh east to Monroeville would become the first section with the I-376 designation.<ref name=1972news>{{cite news|title=Interstates Renumbered|url=https://www.newspapers.com/clip/15491728/interstates_redone_10272_february/|access-date=November 30, 2017|work=The Pittsburgh Press|date=February 24, 1972|page=8|via=[[Newspapers.com]]}} {{open access}}</ref> When I-376 was extended onto the Parkway West in 2009, I-279 was truncated to its current southern terminus at the former western terminus of I-376.<ref name="Interstate 279">{{cite news |first= Jon |last= Schmitz |title= Roads unite to form new Interstate 376 |url= http://www.post-gazette.com/pg/09162/976662-147.stm |work=[[Pittsburgh Post-Gazette]] |date= June 11, 2009 |access-date= June 12, 2009 }}</ref>

PA&nbsp;18 Business was decommissioned in 1978 when PA&nbsp;18 returned to its former alignment (where it has remained to this day) and PA&nbsp;60 was extended all the way to Hermitage.<ref name="1980map">{{cite map |url= http://www.dot.state.pa.us/public/pdf/BPR_pdf_files/Maps/Statewide/Historic_OTMs/1980fr.pdf |title= Commonwealth of Pennsylvania Official Transportation Map |publisher= [[Pennsylvania Department of Transportation]] |format= PDF |year= 1980 |access-date= June 27, 2017 }}</ref><ref>{{cite map|url=http://www.dot.state.pa.us/public/pdf/BPR_PDF_FILES/Maps/Type_10_GHS_Historical_Scans/Mercer_1987.pdf |title=General Highway Map—Mercer County, Pennsylvania |publisher=Pennsylvania Department of Transportation |format=PDF |year=1987 |access-date=June 27, 2017 }}</ref>
{{infobox road small
|state=PA
|type=Toll
|route=60
|name=Pennsylvania Route 60 Toll
|location=[[Chippewa Township, Beaver County, Pennsylvania|Chippewa Township]] – [[New Castle, Pennsylvania|New Castle]]
|formed=1991
|deleted=2009
}}
On November 30, 1992, the {{Convert|16.2|mi|km|adj=on}} gap in Beaver County was completed with a toll highway.<ref>{{cite news|title=Thornburgh Supports State Study on Beaver Expressway Link Job|url=https://news.google.com/newspapers?id=CZ9RAAAAIBAJ&pg=6970%2C1948070|access-date=27 June 2017|work=Pittsburgh Post-Gazette|date=August 15, 1979|page=5}}{{Failed verification|date=June 2017}}</ref>

When the Beaver Valley Expressway started opening in 1991, it would receive the "PA Toll&nbsp;60" designation, because it was operated by the [[Pennsylvania Turnpike Commission|PTC]]. With the opening of the Southern Expressway in 1992, PA&nbsp;60 moved to that highway, while the Airport Parkway received the PA&nbsp;60 Bus designation. PA&nbsp;60 was eventually extended to Sharon in 1997, ending at [[U.S. Route 62 Business (Sharon, Pennsylvania)|US&nbsp;62 Bus]].<ref>{{cite map|url=http://www.dot.state.pa.us/public/pdf/BPR_PDF_FILES/Maps/Type_10_GHS_Historical_Scans/Mercer_1997.pdf |title=General Highway Map—Mercer County, Pennsylvania |publisher=Pennsylvania Department of Transportation |format=PDF |year=1997 |access-date=June 27, 2017 }}</ref>