Editing Interstate 376 (section)

==Route description==
===Beaver Valley Expressway and Airport Parkway===
[[File:Pennsylvania Route 60 Tollway.jpg|thumb|left|Eastward along the toll section of I-376 (then PA&nbsp;60) in [[North Beaver Township, Pennsylvania|North Beaver Township, Lawrence County]]]]
[[File:2022-05-15 07 36 00 View west along Interstate 376 (Beaver Valley Expressway) just west of Exit 36 in Brighton Township, Beaver County, Pennsylvania.jpg|thumb|left|I-376 westbound past the Brighton Road interchange in Brighton Township]]
I-376 begins at a [[cloverleaf interchange]] with [[Interstate 80 in Pennsylvania|I-80]] and [[Pennsylvania Route 760|PA&nbsp;760]] located {{Convert|4|mi|km|spell=in}} east of [[Ohio]] within the [[Glaciated Allegheny Plateau]]. From there, it travels in a southerly direction on the Beaver Valley Expressway, a four-lane freeway with a wide grass median. Paralleling [[Pennsylvania Route 18|PA&nbsp;18]], I-376 has its first interchange with that state highway in [[West Middlesex, Pennsylvania|West Middlesex]].

I-376 soon meets [[U.S. Route 422 in Pennsylvania|US&nbsp;422]] and forms an overlap with that highway along the west side of [[New Castle, Pennsylvania|New Castle]]. After an interchange with [[U.S. Route 224 in Pennsylvania|US&nbsp;224]] in [[Union Township, Lawrence County, Pennsylvania|Union Township]], I-376 eastbound splits from US&nbsp;422 at a [[trumpet interchange]] southwest of the city in [[Taylor Township, Lawrence County, Pennsylvania|Taylor Township]]. At this point, I-376 becomes a [[toll road]] officially named the James E. Ross Highway.

I-376 continues southward, still paralleled by PA&nbsp;18 and the [[Beaver River (Pennsylvania)|Beaver River]] to the east. Shortly after entering [[Beaver County, Pennsylvania|Beaver County]] near [[Koppel, Pennsylvania|Koppel]], the route connects to its parent route [[Interstate 76 in Pennsylvania|I-76]] ([[Pennsylvania Turnpike]]) for the first time at an interchange which also provides access to [[Pennsylvania Route 351|PA&nbsp;351]]. Around this area, I-376 crosses into the [[Unglaciated Allegheny Plateau]], where it remains for the remainder of its length.

I-376 then passes to the east of [[West Mayfield, Pennsylvania|West Mayfield]] and becomes a non-tolled highway again at its first interchange with [[Pennsylvania Route 51|PA&nbsp;51]] in [[Chippewa Township, Beaver County, Pennsylvania|Chippewa Township]], just west of [[Beaver Falls, Pennsylvania|Beaver Falls]]. The freeway then weaves through mountainous terrain, interchanging with [[Pennsylvania Route 68|PA&nbsp;68]] in [[Vanport Township, Beaver County, Pennsylvania|Vanport]] just before crossing the [[Vanport Bridge]] over the [[Ohio River]]. It then has its second interchange with PA&nbsp;18 near [[Kobuta, Pennsylvania|Kobuta]] and continues south from there. I-376 passes to the west of [[Aliquippa, Pennsylvania|Aliquippa]] before leaving Beaver County and entering [[Allegheny County, Pennsylvania|Allegheny County]].

Approaching [[Pittsburgh International Airport|PIT]], I-376 bends south-southwest and becomes the Southern Expressway, while the Beaver Valley Expressway diverges to the southeast along [[Interstate 376 Business|I-376 Business]] (I-376 Bus). I-376 circles around the southern edge of the airport, intersecting the western terminus of the Southern Beltway ([[Pennsylvania Route 576|PA Turnpike&nbsp;576]]) at the main entrance to PIT before recombining with I-376 Bus and becoming the Airport Parkway, still four lanes and with a narrow median.

===Parkway West===
[[File:Interstate 376 - Pennsylvania (8461449162).jpg|left|thumb|220px|I-376 westbound at the PA&nbsp;121 exit in Green Tree]]
Now traveling southeast, the route comes to a [[partial cloverleaf interchange]] with the Penn-Lincoln Parkway ([[U.S. Route 22 in Pennsylvania|US&nbsp;22]] and [[U.S. Route 30 in Pennsylvania|US&nbsp;30]]) and Steubenville Pike ([[Pennsylvania Route 60|PA&nbsp;60]]) in [[Robinson Township, Allegheny County, Pennsylvania|Robinson Township]]. The two US Routes join I-376 here in a partially-unsigned concurrency (indicated only on [[reassurance marker]]s), continuing east-southeastward bearing the Penn-Lincoln Parkway name, and soon reach an interchange with [[Interstate 79 in Pennsylvania|I-79]]. From that point eastward, along what was known for many years as I-279, I-376 runs east-southeast through [[Rosslyn Farms, Pennsylvania|Rosslyn Farms]] and [[Carnegie, Pennsylvania|Carnegie]] before turning northeast and passing through [[Green Tree, Pennsylvania|Green Tree]].

Entering the city of [[Pittsburgh]], I-376 winds its way northeast to its second interchange with PA&nbsp;51 at Saw Mill Run Boulevard, which is also part of a spread-out series of ramps linking Banksville Road ([[U.S. Route 19 in Pennsylvania|US&nbsp;19]]) and [[U.S. Route 19 Truck (Pittsburgh)|US&nbsp;19 Truck]]. This junction, located just before the freeway passes under [[Mount Washington (Pittsburgh)|Mount Washington]] in the [[Fort Pitt Tunnel]], features the infamous [[wrong-way concurrency]] of the northbound and southbound directions of US&nbsp;19 Truck.

[[File:Interstate 376 - Pennsylvania (8461447378).jpg|right|thumb|220px|I-376 westbound between the Fort Pitt Bridge and Fort Pitt Tunnel]]
After passing through the Fort Pitt Tunnel, I-376 emerges onto the four-lane double-deck [[Fort Pitt Bridge]], crossing over the [[Monongahela River]]. There are single-lane westbound exit and eastbound entrance ramps connecting Carson Street to the freeway between the tunnel's portal and the bridge. Once across the river, the route touches down in [[Downtown Pittsburgh]] at [[Point State Park]]. An interchange at the Point connects I-376 to I-279 (Parkway North), which leads to the [[Fort Duquesne Bridge]], as well as Liberty Avenue.

===Parkway East===
I-376 continues east from the Point, still carrying the partially-unsigned US&nbsp;22 and US&nbsp;30, following the north shore of the [[Monongahela River]] through the south side of the downtown area (the westbound area by Downtown from Grant Street to the Fort Pitt Bridge is locally known as the "Bathtub" because of a tendency of the underpass to flood in heavy rains).<ref name="pah-i376"/> The road then continues to the adjacent neighborhoods of [[Uptown Pittsburgh|Uptown]] and [[Oakland (Pittsburgh)|Oakland]]. The Parkway East eventually turns away from the river near the southwestern corner of [[Schenley Park]] and runs along that park's southern border before passing through the [[Squirrel Hill Tunnel]] under [[Squirrel Hill (Pittsburgh)|Squirrel Hill]].

[[File:Interstate 376 - Pennsylvania (8461457652).jpg|thumb|220px|left|I-376 westbound approaching Downtown Pittsburgh]]
Parkway East exits the city of Pittsburgh near the southeastern corner of [[Frick Park]], and US&nbsp;30 leaves the freeway shortly thereafter at [[Pennsylvania Route 8|PA&nbsp;8]] in the suburb of [[Wilkinsburg, Pennsylvania|Wilkinsburg]]. I-376 and US&nbsp;22 (now fully signed) continue in a generally easterly direction through [[Churchill, Pennsylvania|Churchill]], [[Wilkins Township, Pennsylvania|Wilkins Township]], [[Penn Hills, Pennsylvania|Penn Hills]], and finally [[Monroeville, Pennsylvania|Monroeville]], where I-376 ends at an interchange with the Pennsylvania Turnpike and [[U.S. Route 22 Business (Monroeville, Pennsylvania)|US&nbsp;22 Bus]]. US&nbsp;22 continues east from this interchange on the [[William Penn Highway]] toward [[Murrysville, Pennsylvania|Murrysville]].
[[File:Squirrel Hill Tunnel IMG 3134.JPG|right|thumb|220px|I-376 westbound at the Squirrel Hill Tunnel]]