From the 1911 passage of the Sproul Road Bill to the 1987 adoption of the Location Referencing System, all state highways in the U.S. state of Pennsylvania were defined as legislative routes, while some were also posted as Traffic Routes. Major routes were assigned three- or four-digit numbers, while minor routes were given five-digit numbers in which the first two digits represented the county, in alphabetical order from 1 (Adams) to 66 (York). (Philadelphia County was initially skipped, but later assigned the number 67.) State-aid projects, which were carried out even before 1911, received their own permanent numbers - State Aid Application X (SAA X or A-X). Many short routes or realignments were defined as spur or parallel routes to another route.
Often a route remained on its old alignment, while the signed Traffic Route was moved to a newer bypass with a different number.
Interstate 380 (I-380) is an auxiliary Interstate Highway in Northeastern Pennsylvania that connects I-80 with I-81 and I-84. The southern terminus is in Tunkhannock Township at a junction with I-80; the northern terminus of I-380 is at I-81 and U.S. Route 6 (US 6) in Dunmore. The entire length of the highway is 28.45 miles (45.79 km).
Interstate 283 (I-283) is an auxiliary route of the Interstate Highway System located just east of Harrisburg, Pennsylvania. It travels from the Harrisburg East interchange of I-76 north to I-83/U.S. Route 322 at the Eisenhower Interchange. Pennsylvania Route 283 continues southeast from near the southern terminus of I-283 to Lancaster as a freeway, functioning as an extension of the Interstate, though they are two separate roads.
Pennsylvania Route 39 (PA 39) is a 17.83-mile-long (28.69 km) state highway located in Dauphin County, Pennsylvania, United States. PA 39 runs from North Front Street in Susquehanna Township near Harrisburg east to U.S. Route 322 (US 322) and US 422 in Derry Township near Hummelstown and Hershey. The route passes through the northern and eastern suburbs of Harrisburg and passes by Hersheypark, Giant Center, as well as the primary production factory for The Hershey Company. Between Harrisburg and Manada Hill, it is known as Linglestown Road, from Manada Hill to Hershey as Hershey Road and from Hershey to near Hummelstown and Hershey as Hersheypark Drive. Prior to the establishment of PA 39 in 1937, PA 39, had previously been designated as a route in northeastern Pennsylvania during the 1920s. That designation was deleted when it was renumbered US 11. As a result, PA 39 is one of a few routes which has a set of child routes which are no where near the primary route.
Bethlehem Pike is a historic 42.21 mi (67.93 km) long road in the U.S. state of Pennsylvania that connects Philadelphia and Bethlehem, Pennsylvania. It began as a Native American path called the Minsi Trail which developed into a colonial highway called the King's Road in the 1760s. Most of the route later became part of U.S. Route 309, now Pennsylvania Route 309.
Pennsylvania Route 25 is a 35-mile-long (56 km) state highway located in Dauphin and Schuylkill counties in central Pennsylvania. The western terminus of the route is at U.S. Route 209 in Millersburg. The eastern terminus is at US 209 in Newtown. PA 25 runs parallel to the Mahantongo Mountains and the Mahantango Valley, as well as US 209, for its entire length. The route passes through the communities of Berrysburg, Gratz, Sacramento, and Hegins. PA 25 intersects PA 225 in Berrysburg, PA 125 in Hegins, and Interstate 81 (I-81) in Frailey Township. PA 25 was designated in 1928 to run from US 209 in Millersburg east to PA 443 in Pine Grove, running east to Hegins before heading southeast to Tremont and south to Pine Grove. The road between Hegins and Newtown was designated as PA 125. PA 25 was realigned to head east from Hegins to Newtown in the 1930s, with the former alignment between Pine Grove and Hegins becoming a relocated PA 125.
Pennsylvania Route 443 is an 80-mile-long (130 km) east–west state highway in the US state of Pennsylvania. The western terminus is at an intersection with State Route 3009 at North Front Street on the east bank of the Susquehanna River in the community of Fort Hunter in Middle Paxton Township, just west of an interchange with the U.S. Route 22 /US 322 freeway. The eastern terminus is at US 209 in Lehighton. The route runs through rural areas in the Ridge-and-Valley Appalachians in Dauphin, Lebanon, Schuylkill, and Carbon counties, serving Fort Indiantown Gap, Pine Grove, Schuylkill Haven, Orwigsburg, New Ringgold, and South Tamaqua. PA 443 intersects several major roads, including US 22/US 322 near its western terminus, PA 72 in Union Township, Interstate 81 (I-81) near Pine Grove, PA 61 between Schuylkill Haven and Orwigsburg, and PA 309 in South Tamaqua.
Pennsylvania Route 341 is a state highway in the U.S. state of Pennsylvania. The route runs 10.7 miles (17.2 km) from PA 230 in Londonderry Township in Dauphin County east to PA 241 in South Londonderry Township in Lebanon County. The route is a two-lane undivided road known as Colebrook Road for its entire length, passing through rural areas. Along the way, PA 341 crosses PA 743 near Deodate and passes through Upper Lawn. An eastbound truck route, PA 341 Truck, bypasses the route between PA 230 and PA 743. PA 341 was first designated onto its current alignment by 1930, running between U.S. Route 230 and PA 241. The route was fully paved in the 1930s. Between the 1930s and 1940s, PA 341 headed southeast along Lawn Road to end at PA 241 in Lawn.
Pennsylvania Route 148 is a 6.50-mile-long (10.46 km), north–south state highway located in Allegheny County, Pennsylvania. The southern terminus is at PA 48 in McKeesport. The northern terminus is at U.S. Route 30 in East McKeesport.
Pennsylvania Route 268 is a 35-mile-long (56 km) state highway that is located in Armstrong, Butler, and Venango counties in Pennsylvania.
Pennsylvania Route 285 is an 27.1-mile-long (43.6 km), east–west state highway located in Crawford County in Pennsylvania, United States. The western terminus is the Ohio state line on Lake Pymatuning, where the road becomes Ohio State Route 85. The eastern terminus is at PA 173 in Cochranton.
Pennsylvania Route 325 is a 30-mile-long (48 km) state highway located in Dauphin and Schuylkill counties in Pennsylvania. The western terminus is at the intersection of Mountain Road and Earl Drive, just past an interchange with U.S. Route 22 /US 322, in the community of Speeceville in Middle Paxton Township. The eastern terminus is at US 209 in Tower City. PA 325 runs through a narrow valley for its length, passing through forested areas with some farmland. The route forms a concurrency with PA 225 to the north of Dauphin. The road was paved in stages between 1930 and the 1940s. PA 325 was designated in the 1940s to run between US 22/US 322/PA 14 in Speeceville east to US 209 in Tower City. In 1999, an interchange with US 22/US 322 was constructed near the western terminus; the end of PA 325 remained at Riverview Road, the former alignment of US 22/US 322.
Pennsylvania Route 331 is a 14.5-mile-long (23.3 km), east–west state highway located in Washington County, Pennsylvania. The western terminus is at the West Virginia state line in Independence Township where the road continues as West Virginia Route 67. The eastern terminus is at PA 844 in Canton Township. PA 331 was initially established on May 27, 1935. The route was rerouted in the 2000s following the closure of a bridge over Buffalo Creek.
Pennsylvania Route 407 is a 12.5-mile-long (20.1 km) state highway located in Lackawanna and Susquehanna counties in Pennsylvania. The southern terminus is at U.S. Route 6 /US 11 in South Abington Township, Pennsylvania near Clarks Summit near the northern terminus of Interstate 476 (I-476), also known as the Pennsylvania Turnpike Northeast Extension. The northern terminus is at PA 374 near Glenwood. PA 407 is a two-lane road that serves Clarks Green and Waverly in northern Lackawanna County. This route was part of the Philadelphia and Great Bend Turnpike, a turnpike that was built in 1826. PA 407 was designated in 1928 between US 6/US 11 in Clarks Summit and PA 107 in Fleetville. The route was extended north to PA 374 in 1961. PA 407 was rerouted to its current southern terminus in 2004.
State Route 1005 is a short, 3.3-mile-long (5.3 km) road located in Delaware County in Pennsylvania.
In the U.S. state of Pennsylvania, state highways are generally maintained by the Pennsylvania Department of Transportation (PennDOT). Each is assigned a four-digit State Route (SR) number in the present Location Referencing System. Traffic Routes are signed as Interstate Highways, U.S. Routes and Pennsylvania Routes, and are prefixed with one to three zeroes to give a four-digit number. PA Routes are also called Pennsylvania Traffic Routes, and formerly State Highway Routes.
Pennsylvania Route 711 is a 55-mile-long (89 km), north–south state highway that is located in Fayette, Westmoreland, and Indiana counties in Pennsylvania in the United States.
Pennsylvania Route 770 is a 12-mile-long (19 km), east–west state highway that is located in McKean County in Pennsylvania.
Pennsylvania Route 849 is a 24.8-mile-long (39.9 km) state highway located in Perry and Dauphin counties in Pennsylvania. The western terminus is at PA 74 in Saville Township, Perry County. The eastern terminus is at U.S. Route 22 /US 322 in Reed Township, Dauphin County, near Duncannon. PA 849 winds east from PA 74 through farms and woods to Newport, where it forms a concurrency with PA 34. From Newport, the route heads southeast through more rural land to Duncannon, where it turns east and crosses the Juniata River to reach its terminus at US 22/US 322 just north of the Susquehanna River.
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