Pennsylvania Route 100 is a 59.4-mile (95.6 km) long state highway in the U.S. state of Pennsylvania that runs from U.S. Route 202 near West Chester north to PA 309 in Pleasant Corners. The route runs between the western suburbs of Philadelphia and the Lehigh Valley region of the state, serving Chester, Montgomery, Berks, and Lehigh counties. PA 100 intersects several important highways, including US 30 in Exton, the Pennsylvania Turnpike (I-76) near Lionville, US 422 near Pottstown, US 222 in Trexlertown, and I-78/US 22 in Fogelsville. Several sections of PA 100 are multi-lane divided highway with some interchanges, including between US 202 and the Pennsylvania Turnpike in Chester County between south of Pottstown and New Berlinville, and between Trexlertown and Fogelsville.
Pennsylvania Route 309 is a state highway that runs for 134 miles (216 km) through eastern Pennsylvania. The route runs from an interchange between PA 611 and Cheltenham Avenue on the border of Philadelphia and Cheltenham Township north to an intersection with PA 29 in Bowman Creek, a village in Monroe Township in Wyoming County. The highway connects Philadelphia and its northern suburbs to Allentown and the Lehigh Valley, and Hazleton and Wilkes-Barre in Wyoming Valley.
U.S. Route 422 (US 422) is a 271-mile-long (436 km) spur route of US 22 split into two segments in the U.S. states of Ohio and Pennsylvania. The western segment of US 422 runs from downtown Cleveland, Ohio, east to Ebensburg, Pennsylvania. The eastern segment, located entirely within Pennsylvania, runs from Hershey east to King of Prussia, near Philadelphia. US 422 Business serves as a business route into each of four towns along the way.
Pennsylvania Route 29 is a 118-mile-long (190 km) north–south state highway that runs through most of eastern Pennsylvania.
Pennsylvania Route 313 is a mostly 2-lane, 18-mile-long (29 km) state highway entirely within Bucks County, Pennsylvania. The western end of PA 313 is at an intersection with PA 309 and PA 663 in Quakertown. The eastern end is at an intersection with PA 263 in the Doylestown Township community of Furlong. PA 313 is signed an east–west road, although it runs almost purely northwest–southeast through most of its course. It is a major arterial road in central and northern Bucks County as it connects several communities including Quakertown, Dublin, and Doylestown.
Pennsylvania Route 724 is a 30-mile (48 km) road in the U.S. commonwealth of Pennsylvania that runs from U.S. Route 422 in Sinking Spring southeast to PA 23 near Phoenixville. PA 724 travels through Berks and Chester counties. The route runs through the southern suburbs of Reading, passing through Shillington and Kenhorst. Past the Reading area, PA 724 continues southeast parallel to the Schuylkill River, passing through or near Birdsboro, Pottstown, and Spring City. The route intersects many roads including US 222 near Shillington, PA 10 and Interstate 176 (I-176) southeast of Reading, PA 345 in Birdsboro, and PA 100 and US 422 near Pottstown.
Pennsylvania Route 363 (PA 363) is a state highway located in Montgomery County, Pennsylvania that is a spur of PA 63. The route, which is signed north-south, runs 11.96 mi (19.25 km) from an interchange with U.S. Route 422 (US 422) in Audubon northeast to an intersection with PA 63 in Lansdale. The route runs mostly through suburban areas of central Montgomery County, passing some farmland in Worcester Township. PA 363 is designated along Trooper Road, Ridge Pike, Park Avenue, and Valley Forge Road. In the community of Worcester, the route crosses PA 73.
Pennsylvania Route 663 (PA 663) is a 22.13-mile-long (35.61 km) state highway in Montgomery and Bucks counties in southeast Pennsylvania. Its southern terminus is at PA 100 in the borough of Pottstown and its northern terminus is at PA 309 and PA 313 in the borough of Quakertown, where the road continues eastward as PA 313. Along the way, PA 663 also passes through the borough of Pennsburg. It is called John Fries Highway between Pennsburg and Quakertown. It has an interchange with Interstate 476 at exit 44 west of Quakertown. The route was assigned in 1930, and it has had several realignments since its commissioning, including two major ones.
The Baltimore Pike was an auto trail connecting Baltimore, Maryland, with Philadelphia, Pennsylvania.
Pennsylvania Route 63 (PA 63) is a 37.4-mile-long (60.2 km) state highway located in the Philadelphia, Pennsylvania, area. The western terminus of the route is at PA 29 in Green Lane, Montgomery County. The eastern terminus is at Interstate 95 (I-95) in Bensalem Township, Bucks County. PA 63 runs northwest to southeast for most of its length. The route heads through a mix of suburban and rural areas of northern Montgomery County as a two-lane road, passing through Harleysville, before coming to an interchange with I-476 in Kulpsville. From this point, PA 63 continues through predominantly suburban areas of eastern Montgomery County as a two- to four-lane road, passing through Lansdale, Maple Glen, Willow Grove, and Huntingdon Valley. Upon entering Northeast Philadelphia, the route follows Red Lion Road and U.S. Route 1 (US 1) before heading southeast on a freeway called Woodhaven Road to I-95.
Pennsylvania Route 73 (PA 73) is a 62.32-mile (100.29 km) long east–west state highway in southeastern Pennsylvania. It runs from PA 61 near Leesport southeast to the New Jersey state line on the Tacony–Palmyra Bridge over the Delaware River in Philadelphia, where the road continues south as New Jersey Route 73. The route passes through rural areas of Berks County, crossing U.S. Route 222 (US 222) in Maiden Creek before heading southeast through Oley and Boyertown. PA 73 continues into Montgomery County and intersects PA 100 in Gilbertsville and PA 29 in Schwenksville before it heads into the northwest suburbs of Philadelphia. The route passes through Skippack and intersects US 202 in Center Square, PA 309 in Springfield Township, and PA 611 near Jenkintown. PA 73 continues through Northeast Philadelphia on Cottman Avenue, crossing US 1 and US 13 before coming to an interchange with Interstate 95 (I-95) near the Tacony–Palmyra Bridge.
Pennsylvania Route 23 is an 81.14-mile-long (130.58 km) state highway in southeastern Pennsylvania. The route begins at PA 441 in Marietta and heads east to U.S. Route 1 at City Avenue on the border of Lower Merion Township and Philadelphia. PA 23 begins at Marietta in Lancaster County and continues east to Lancaster, where it passes through the city on a one-way pair of streets and intersects US 222 and US 30.
U.S. Route 422 Business is a 7.29-mile-long (11.73 km) business route of US 422 located in the Reading, Pennsylvania area. The route is one of four auxiliary routes of US 422 in Pennsylvania. Its western terminus is at an interchange with US 222 and US 422 in Wyomissing. Its eastern terminus is at an interchange with US 422 in Reiffton. US 422 Bus. heads east from US 222/US 422 along Penn Avenue, passing through Wyomissing and West Reading. The route has an interchange with the US 422 freeway before it crosses the Schuylkill River into Reading. US 422 Bus. passes through downtown Reading on the one-way pair of Franklin Street eastbound and Washington Street westbound, intersecting the southern terminus of Pennsylvania Route 183 and crossing US 222 Bus. The business route heads into the eastern part of the city southeast on Perkiomen Avenue before following the one-way pair of Perkiomen Avenue eastbound and Mineral Spring Road westbound into Mount Penn. US 422 Bus. continues along Perkiomen Avenue to St. Lawrence, where it intersects the western terminus of PA 562 and turns southeast. The route passes through Reiffton before it merges into eastbound US 422.
Pennsylvania Route 113 is a 46.9-mile-long (75.5 km) state route in eastern Pennsylvania. The southern terminus of the route is at U.S. Route 30 Business in Downingtown. Its northern terminus is at PA 611 in Tinicum Township. The route is signed as north–south although its exact alignment follows a northeast-southwest routing. The route serves Chester, Montgomery, and Bucks counties, passing through Lionville, Phoenixville, Trappe, Skippack, Harleysville, Souderton, and Silverdale along the way.
U.S. Route 1 (US 1) is a major north–south U.S. Route, extending from Key West, Florida, in the south to Fort Kent, Maine, at the Canada–United States border in the north. In the U.S. state of Pennsylvania, US 1 runs for 81 miles (130 km) from the Maryland state line near Nottingham northeast to the New Jersey state line at the Delaware River in Morrisville, through the southeastern portion of the state. The route runs southwest to northeast and serves as a major arterial road through the city of Philadelphia and for many of the suburbs in the Delaware Valley metropolitan area. South of Philadelphia, the road mostly follows the alignment of the Baltimore Pike. Within Philadelphia, it mostly follows Roosevelt Boulevard. North of Philadelphia, US 1 parallels the route of the Lincoln Highway. Several portions of US 1 in Pennsylvania are freeways, including from near the Maryland state line to Kennett Square, the bypass of Media, the concurrency with Interstate 76 and the Roosevelt Expressway in Philadelphia, and between Bensalem Township and the New Jersey state line.
U.S. Route 13 (US 13) is a United States Numbered Highway running from Fayetteville, North Carolina, north to Morrisville, Pennsylvania. The route runs for 49.359 miles (79.436 km) through the Delaware Valley metropolitan area in the U.S. state of Pennsylvania. The route enters the state from Delaware in Marcus Hook, Delaware County. It continues northeast through Delaware County, passing through the city of Chester before heading through suburban areas along Chester Pike to Darby. US 13 enters the city of Philadelphia on Baltimore Avenue and runs through West Philadelphia to University City, where it turns north along several city streets before heading east across the Schuylkill River along Girard Avenue. The route turns north and heads to North Philadelphia, where it runs northeast along Hunting Park Avenue. US 13 becomes concurrent with US 1 on Roosevelt Boulevard, continuing into Northeast Philadelphia. US 13 splits southeast on a one-way pair of streets before heading northeast out of the city on Frankford Avenue. The route continues into Bucks County as Bristol Pike, heading northeast to Bristol, where it becomes a divided highway. US 13 becomes a freeway in Tullytown and continues north to its terminus at US 1 in Falls Township, near Morrisville. US 13 roughly parallels Interstate 95 (I-95) through its course in Pennsylvania.
U.S. Route 202 is a US Highway running from New Castle, Delaware, northeast to Bangor, Maine. In the U.S. state of Pennsylvania, the route runs for 59 miles (95 km), from the Delaware state line in Bethel Township, Delaware County, to the New Hope–Lambertville Toll Bridge over the Delaware River in Solebury Township, where the route crosses into New Jersey. The highway runs through the western and northern suburbs of Philadelphia in the Delaware Valley metropolitan area, and serves as a toll-free bypass around the city, avoiding the busy traffic and congestion on Interstate 95 (I-95). It is signed north–south and follows a general southwest–northeast direction through the state.
At least four special routes of U.S. Route 422 currently exist and at least three have been decommissioned.
Germantown Pike is a historic road in Pennsylvania that opened in 1687, running from Philadelphia northwest to Collegeville. The road is particularly notable for the "imposing mansions" that existed in the Germantown neighborhood in Philadelphia. The road was left in ruins after the British destroyed it in the Revolutionary War during the 1777 Battle of Germantown, and was not rebuilt until 1809. Portions of Germantown Pike were signed as U.S. Route 422 (US 422) before the latter was rerouted along a freeway alignment to King of Prussia.
Butler Pike is a road in Montgomery County, Pennsylvania, that runs northeast from Conshohocken to Horsham Township. For most of its 9.8-mile (15.8 km) length, it is a county road and forms a boundary between townships.
US 422 in Douglassville 
