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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. On October 1, 1940, the Pennsylvania Turnpike's first section of highway was ...
The New York–Pennsylvania border is the state line between the U.S. states of New York and Pennsylvania. It has three sections: The survey of the 42nd parallel north was carried out in 1785–86 and accepted by the two states in 1787. The surveying technique that was used at the time was not especially accurate, and as such, this boundary ...
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 ...
Interstate 81 ( I-81) is a north–south Interstate Highway, stretching from Dandridge, Tennessee, northeast to Fisher's Landing, New York, at the Canada–United States border. In Pennsylvania, I-81 runs for 232.76 miles (374.59 km) from the Maryland state line northeast to the New York state line near Hallstead and is called the American ...
State. Scenic. Legislative. 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).
United States Numbered Highways of the Pennsylvania State Route System. Route markers for U.S. Route 6, U.S. Route 30, and U.S. Route 322. System information. Notes. All routes are assigned State Route (SR X) numbers, usually corresponding to the signed numbers. U.S. Routes are generally state-maintained.
Pennsylvania Route 611 ( PA 611) is a state highway in eastern Pennsylvania running 109.7 mi (176.5 km) from Interstate 95 (I-95) in the southern part of Philadelphia north to I-380 in Coolbaugh Township in the Pocono Mountains. Through most of Philadelphia, PA 611 follows Broad Street, the main north-south street in Philadelphia.