U.S. Route 30 (US 30) is a United States Numbered Highway that runs east–west across the southern part of Pennsylvania, passing through Pittsburgh and Philadelphia on its way from the West Virginia state line east to the Benjamin Franklin Bridge over the Delaware River into New Jersey.
In Pennsylvania, US 30 runs along or near the transcontinental Lincoln Highway, an auto trail which ran from San Francisco to New York City before the U.S. Numbered Highways were designated. The Lincoln Highway turned northeast at Philadelphia, however, using present US 1 and its former alignments to cross the Delaware River into Trenton, New Jersey.
Points of interest along US 30 include the Gettysburg Battlefield, Dutch Wonderland, the Flight 93 National Memorial, Fort Ligonier, Westmoreland Mall, Jennerstown Speedway Complex, Idlewild and Soak Zone, and Independence Mall at the Independence National Historical Park.
Route description West Virginia to Pittsburgh US 30 enters Pennsylvania from West Virginia in Beaver County, heading east along the two-lane undivided Lincoln Highway. The road passes through rural areas and comes to an intersection with Pennsylvania Route 168 (PA 168) south of Hookstown, where it briefly becomes a divided highway. US 30 continues as an undivided road, turning northeast and then southeast before it comes to a junction with the western terminus of PA 151. The road heads southeast and crosses PA 18 in Harshaville.
The route passes through Raccoon Creek State Park, where it turns south and crosses Raccoon Creek. The road leaves the state park and curves to the southeast.
US 30 enters Allegheny County and continues east along the Lincoln Highway, reaching Clinton. Here, the route turns to the southeast and comes to an interchange with the PA 576 toll road to the southwest of Pittsburgh International Airport, where the route briefly becomes a divided highway. The road continues southeast and reaches Imperial, where it passes under the Montour Trail.
US 30 heads into developed areas, crossing Steubenville Pike, and comes to a partial cloverleaf interchange with the US 22 freeway, where US 30 heads east in concurrency with US 22, and PA 978 begins (running southeast). US 22/US 30 runs east as a four-lane freeway through suburban areas, coming to a partial cloverleaf interchange with Oakdale Road that serves Hankey Farms. Farther east, the freeway has a westbound exit and eastbound entrance with McKee Road that provides access to Oakdale to the south.
From here, US 22/US 30 turns east-northeast and reaches an interchange that connects to Old Steubenville Pike, Bayer Road, and Montour Church Road. The freeway comes to an interchange with Interstate 376 (I-376), where US 22/US 30 heads southeast concurrent with I-376, and PA 60 begins by heading east (south) at-grade on a four-lane divided highway.
I-376/US 22/US 30 heads southeast as the four-lane Penn-Lincoln Parkway, reaching an interchange with Ridge Road. The freeway comes to a westbound exit and eastbound entrance with Campbell's Run Road, where it widens to six lanes. The highway curves to the east and meets I-79 at an interchange. Past this interchange, I-376/US 22/US 30 narrows to two lanes eastbound and heads into Rosslyn Farms, turning southeast and coming to a westbound exit and eastbound entrance with Rosslyn Road that serves Rosslyn Farms.
The freeway crosses into Carnegie. It reaches a bus-only eastbound exit and westbound entrance connecting to Pittsburgh Regional Transit (PRT)'s West Busway before passing over a Pittsburgh and Ohio Central Railroad line. The highway passes over Chartiers Creek and another Pittsburgh and Ohio Central Railroad line as it leaves Carnegie and comes to the PA 50 interchange. I-376/US 22/US 30 narrows to four lanes, passing under a Wheeling and Lake Erie Railway line and curving northeast into Green Tree.
The freeway reaches the PA 121 interchange, where it gains a third westbound lane, and heads east, entering Pittsburgh and coming to a westbound exit and eastbound entrance with Parkway Center Drive. The highway turns north and reaches a westbound exit and eastbound entrance with US 19, where US 19 joins I-376/US 22/US 30 on the Penn-Lincoln Parkway. Within this interchange, the road has an eastbound runaway truck ramp and passes under a ramp carrying both directions of US 19 Truck.
The freeway widens to six lanes and passes under a Wheeling and Lake Erie Railway line before reaching an interchange with PA 51, where US 19 Truck joins the Penn-Lincoln Parkway from PA 51 and US 19 splits from the Penn-Lincoln Parkway by heading north along with PA 51. Past this interchange, I-376/US 19 Truck/US 22/US 30 narrows to four lanes and passes under Mount Washington in the Fort Pitt Tunnel.
After emerging from the Fort Pitt Tunnel, the freeway passes over Norfolk Southern Railway's Mon Line and PA 837, coming to a westbound exit and eastbound entrance that connects to northbound PA 837. The Penn-Lincoln Parkway heads onto the Fort Pitt Bridge, a double-decker bridge carrying four lanes in each direction, and passes over CSX Transportation's Pittsburgh Subdivision railroad line and the Monongahela River as it heads into Downtown Pittsburgh at Point State Park and comes to an interchange with the southern terminus of I-279, where US 19 Truck heads north along I-279 and I-376/US 22/US 30 continues east along the Penn-Lincoln Parkway. The I-279 interchange also includes eastbound exits and westbound entrances with Boulevard of the Allies/Liberty Avenue and Fort Duquesne Boulevard that serve Downtown Pittsburgh.
The four-lane freeway heads east-southeast between Downtown Pittsburgh to the north and the Monongahela River to the south, reaching a partial interchange with Stanwix Street with no eastbound exit. The highway passes under the Smithfield Street Bridge and reaches an interchange with Grant Street, where it widens to six lanes. I-376/US 22/US 30 pass under the Panhandle Bridge carrying PRT's Pittsburgh Light Rail line and then the Liberty Bridge before the lanes split as it reaches a westbound ramp to Second Avenue north of the South Tenth Street Bridge and south of the Duquesne University campus.
Past this point, the highway continues east between urban areas to the north and the Monongahela River to the south, with the Three Rivers Heritage Trail in the median. The freeway comes to an interchange connecting to PA 885 and Forbes Avenue north of the Birmingham Bridge, at which point the trail leaves the median of the freeway and the river heads further south from the freeway. I-376/US 22/US 30 head southeast, with the Three Rivers Heritage Trail parallel to the south, and reaches a westbound exit and eastbound entrance with PA 885. The highway turns east away from the trail and passes over the Allegheny Valley Railroad's P&W Subdivision line.
The freeway comes to an interchange with Beechwood Boulevard before it narrows to four lanes and passes under the southern portion of Squirrel Hill in the Squirrel Hill Tunnel. Past the tunnel, I-376/US 22/US 30 heads through wooded areas and passes over Ninemile Run in Frick Park. The highway leaves Pittsburgh as it comes to an interchange with Braddock Avenue that serves Edgewood and Swissvale. The freeway continues east through suburban areas in Edgewood, passing under Norfolk Southern Railway's Pittsburgh Line and the PRT's Martin Luther King Jr. East Busway.
I-376/US 22/US 30 turns to the northeast and heads through a corner of Braddock Hills before entering Wilkinsburg. In Wilkinsburg, the freeway comes to an interchange with the southern terminus of PA 8, where US 30 splits from I-376/US 22 on the Penn-Lincoln Parkway by heading southeast at-grade on Ardmore Boulevard.
Pittsburgh to Breezewood
US 30 follows Ardmore Boulevard, a five-lane divided highway with two eastbound lanes and three westbound lanes, and enters Forest Hills, running through suburban development as it curves to the south. The road narrows to two westbound lanes before it curves to the southeast. The route turns to the south-southeast and passes through the center of Forest Hills.
US 30 gains a third eastbound lane before it skirts the border between North Braddock to the west and Chalfant to the east as it comes to an eastbound exit and westbound entrance with Electric Avenue. Past this interchange, the route becomes the four-lane undivided Lincoln Highway and heads south, crossing into East Pittsburgh. The road crosses over Bessemer Avenue on a bridge before it curves southeast and heads onto George Westinghouse Bridge, where it passes over Braddock Avenue, a Union Railroad line, Norfolk Southern Railway's Pittsburgh Line, Turtle Creek, and Norfolk Southern Railway's Port Perry Branch.
After passing over Turtle Creek, US 30 leaves East Pittsburgh, turning into a divided highway and passing over East Pittsburgh McKeesport Boulevard. The route comes to an interchange with Greensburg Pike and becomes undivided before it enters East McKeesport as Greensburg Avenue. Here, the road turns northeast, curving east and intersecting the northern terminus of PA 148. US 30 runs east-southeast as it leaves East McKeesport and continues along the Lincoln Highway. Along this stretch, the route briefly becomes a divided highway at intersections with Luehm Avenue and PA 48.
US 30 enters Westmoreland County in the Laurel Highlands region and continues south along the four-lane undivided Lincoln Highway, curving southeast and passing through Stewartsville. The road briefly becomes a divided highway at intersections with Leger Road/Carpenter Lane and Center Highway/Robbins Station Road. The route turns to the east and comes to an eastbound exit and entrance with Main Street in Fairmont before entering Irwin.
US 30 gains a center left-turn lane before it leaves Irwin and becomes a four-lane divided highway as it comes to the Irwin interchange with the Pennsylvania Turnpike (I-76). Past this interchange, the median becomes a center-left turn lane.
US 30 runs along the southern border of Adamsburg and becomes a divided highway as it reaches an interchange with Edna Road serving Adamsburg. The road becomes five lanes with a center left-turn lane and passes through Lincoln Heights and runs along the southern border of Jeannette.
Past Jeannette, US 30 curves southeast and turns into a four-lane divided highway, coming to an interchange with the PA 66 toll road. After this interchange, the route briefly widens to six lanes before curving east and becoming a five-lane road with a center left-turn lane, turning into a four-lane divided highway as it passes south of the Greengate Centre shopping center and comes to a bridge over the Southwest Pennsylvania Railroad's Radebaugh Subdivision line.
US 30 becomes a freeway that bypasses Greensburg to the south and curves southeast, reaching an eastbound exit and westbound entrance with West Pittsburgh Street. The road enters Greensburg and comes to a partial cloverleaf interchange with PA 136. The route runs along the southwest border of Southwest Greensburg and reaches a partial cloverleaf interchange with US 119/PA 66 Business (PA 66 Bus.)/PA 819.
Past this interchange, US 30 passes over the Southwest Pennsylvania Railroad's Greensburg Industrial Track line and the Five Star Trail, at which point it heads through a section of South Greensburg before it comes to a right-in/right-out interchange with Cedar Street. At this point, the freeway curves northeast, reaching a diamond interchange with Mt. Pleasant Road. The road passes through a section of Greensburg and comes to an eastbound exit and westbound entrance with PA 130. A short distance later, the freeway section ends at the westbound exit and eastbound entrance with East Pittsburgh Street to the east of Greensburg.