Former state routes in Pennsylvania

Pennsylvania Route 1 was the designation for the Lincoln Highway in Pennsylvania between 1924 and 1928. It is now US 30 west of Philadelphia and US 1 east of Philadelphia. ==PA 2==

The former Pennsylvania Route 2 was the designation for the Lackawanna Trail and was formed in 1924, running south to north from Philadelphia to the New York state line for a distance of . The route passed through Philadelphia, Montgomery, Bucks, Northampton, Monroe, Wayne, Lackawanna, Wyoming, and Susquehanna Counties. The origins of the highway lie in 1918, when the Motor Club of Lackawanna County petitioned to have the former road bed of the Delaware, Lackawanna and Western Railroad from Clark's Summit to Hallstead rebuilt as a highway. Construction of the highway from the New York state line to Scranton in 1919, and by 1920 the Lackawanna Trail was listed on auto trail maps. At the time of construction, the highway in Pennsylvania only extended to Darlington's Bridge, while the Gap Way extended from this point to Philadelphia. Rand McNally lists an extension of the Lackawanna Trail to Hackettstown, New Jersey, where it met the William Penn Highway. In 1924, Pennsylvania incorporated the Gap Way into the Lackawanna Trail, completing the cross-state route. Deleted in 1928, PA 2 followed the former U.S. Route 611 from Philadelphia to Scranton (now Pennsylvania Route 611 between Philadelphia and Tobyhanna and Pennsylvania Route 435 between Gouldsboro and Dunmore), and the current U.S. Route 11 from there to the New York state line near Great Bend. The route originally continued as New York State Route 2 (now US 11). ==PA 3==

The original Pennsylvania Route 3 was the designation for the William Penn Highway running from Hanover Township to Easton. After its decommissioning in 1930, PA 3 was renumbered in several areas to extend active routes, including US 22 from the WV/PA state line to Harrisburg, PA 60 from Robinson Township to Pittsburgh, US 322 from Harrisburg to Hershey, US 422 from Hershey to Wyomissing, US 422 Business from Wyomissing to Reading, US 222 Business from Reading to Laureldale, US 222 from Laureldale to Dorneyville (except the Kutztown and Trexlertown/Wescosville bypasses), and PA 222 from Dorneyville to Allentown. PA 3 was reactivated in 1936 to its current alignment from West Chester to downtown Philadelphia. ==PA 4==

The former Pennsylvania Route 4 was formed in 1924, The route passed through York, Cumberland, Dauphin, Perry, Juniata, Snyder, Northumberland, Lycoming, and Tioga Counties. Deleted in 1930, PA Route 4 followed the former US 111 alignment from Maryland state line to Harrisburg; US 22 from Harrisburg to Amity Hall; US 11 along with the former US 111 from Amity Hall to Northumberland; the former US 120 from Northumberland to Williamsport; and again the former US 111 from Williamsport to the New York state line. ==PA 5==

The original Pennsylvania Route 5 was the designation for the Lakes-to-Sea Highway running from Erie to Philadelphia. It is now US 19, US 322, and PA 3. ==PA 6==

Pennsylvania Route 6 is the former designation for what is now US 219. ==PA 7==

Pennsylvania Route 7 is the former designation for what became US 6 between Erie and Matamoras. ==PA 9 (1920s)==

Pennsylvania Route 9 is the former designation for what is now US 20 in Erie County. ==PA 9 (1980s)==

Pennsylvania Route 9 was the designation for the Northeast Extension of the Pennsylvania Turnpike from 1974 to 1996, when it was replaced by I-476. ==PA 10==

The original Pennsylvania Route 10 was designated on the current segment of US 119 between Blairsville/Indiana County and DuBois/Clearfield County. In the 1928 renumbering, PA 10 extended north on the current segment of US 219 to New York, replacing part of PA 6. The route number was reactivated in 1956 and applied to the route now aligned through Chester, Lancaster, and Berks Counties. ==PA 11==

Pennsylvania Route 11 is the former designation for what is now US 40 in Pennsylvania. ==PA 12 (1920s)==

Pennsylvania Route 12 is the former designation for the Baltimore Pike from Nottingham to Philadelphia. In 1926, US 1 was overlaid on PA 12. In 1927, PA 12 extended north concurrent with US 309 (now PA 309) to Center Valley, and further north on what became PA 378 to Bethlehem. By 1928, PA 12 extended further north on what became PA 191 between Center Valley and Stockertown and a now-unnumbered road between Stockertown and Bartonsville that parallels the PA 33 freeway. In 1930, the sections that overlapped US 1 and US 309 were decommissioned, truncating the south end to Center Valley. ==PA 13==

Pennsylvania Route 13 was a state highway that ran through Franklin, Cumberland, Dauphin, Lebanon, Berks, Montgomery, and Philadelphia Counties. The western terminus was at the Maryland state line in State Line and the eastern terminus was at US 309 in Chestnut Hill. The route was replaced by US 11, US 22 and US 120. ==PA 15==

Pennsylvania Route 15 is the former designation for what became PA 115 between Wilkes-Barre and Mount Pocono. ==PA 17==

The defunct Pennsylvania Route 17 in Erie County was the former designation of what is now I-86. It ran from I-90 to New York State Route 17 at the PA-NY state line. Do not confuse with the still-in-use PA 17 in Perry County, which was designated in 1928. ==PA 19==

Pennsylvania Route 19 ran through eight Pennsylvania counties from Lewistown northeast to the Delaware River across from Narrowsburg, New York, and became parts of U.S. Route 522, U.S. Route 11, and U.S. Route 106 in the 1928 renumbering. Part of the road was renumbered as PA 39; PA 139, PA 239, PA 339, PA 439, PA 539, and PA 639 are spurs of PA 39; several three-digit numbers ending in 19 were already used by U.S. Routes (US 119 and US 219). ==PA 22==

Pennsylvania Route 22 was a state highway that ran through Lehigh, Carbon, and Luzerne Counties. The southern terminus was at PA 3 in Allentown and the northern terminus was at PA 19 in Wilkes-Barre. The route was decommissioned in 1930 and renumbered as an alignment of US 309 which was decommissioned and changed in February 1968 to its current designation of PA 309. ==PA 37==

Pennsylvania Route 37 is the former designation for what is now PA 434 between Greeley and Shohola. ==PA 43 (1920s)==

The original Pennsylvania Route 43 ran from U.S. Route 22, U.S. Route 11, and Pennsylvania Route 5 in Harrisburg to Pennsylvania Route 12 in Bethlehem. When the highway was truncated in 1932 along Susquehanna Street from Allentown to Bethlehem, its previous alignment was designated as U.S. Route 22. ==PA 43 (1950s)==

Pennsylvania Route 43 was reactivated in 1952 and reassigned along the Schuylkill Expressway (which was already designated as then-I-80S, thus forming a concurrency) from King of Prussia (at the Pennsylvania Turnpike) to the PA/NJ state line midway across the Walt Whitman Bridge. In 1964, both designations were dropped and the expressway was renumbered as an extension of I-76. PA 43's third and current activation came in the 1980s as construction of the Mon-Fayette Expressway began. ==PA 47 (west)==