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Since Pennsylvania first introduced numbered traffic routes in 1924, a keystone symbol shape has been used, in reference to Pennsylvania being the "Keystone State". The signs originally said "Penna" (a common abbreviation for Pennsylvania at the time), followed by the route number in block-style numbering in a keystone cutout.
The Pennsylvania State Route System was established by the Sproul Road Bill passed in 1911. The system took control of over 4,000 miles of road. The system of roads continued to grow over the next few decades until continual addition of roads faced greater opposition.
The list of Interstate Highways in Pennsylvania encompasses 23 Interstate Highways—12 primary routes and 11 auxiliary routes—which exist entirely or partially in the U.S. state of Pennsylvania. In Pennsylvania, most of the Interstate Highways are maintained by the Pennsylvania Department of Transportation (PennDOT).
PA Route 51, State Route 3109, State Route 3077, State Route 3007, State Route 3002, PA Route 18, State Route 6018, State Route 4042, PA Route 68: 77 Beaver: New Castle: 78 Beaver: Butler: 79 Butler: New Castle: 80 New Castle: Mercer: 81 New Castle: Ohio state line 82 Mercer: Meadville: 83 Conneaut Lake: Ohio state line 84 Meadville: Erie: 85 ...
All routes are assigned State Route (SR X) numbers, usually corresponding to the signed numbers. U.S. Routes are generally state-maintained. Highway names; US Highways: U.S. Route X (US X) Special Routes:
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 ...
This is a list of State Routes in Dauphin County, Pennsylvania. State Routes in Pennsylvania are maintained by the Pennsylvania Department of Transportation.This list incorporates routes numbered between 0001 and 4999 which are either Traffic Routes (Interstate, US, or PA Routes numbered 0001 through 0999) or Quadrant Routes (State Routes numbered 1001 through 4999).
Articles about state highways in the U.S. state of Pennsylvania. For a manually maintained list, including yet-to-be-written articles, see List of Pennsylvania State Routes . v