Interstate 81 in Pennsylvania

Interstate 81
Interstate 81
American Legion Memorial Highway
	I-81 highlighted in red
Route information
	Maintained by PennDOT
Length	232.76 mi (374.59 km)
NHS	Entire route
Major junctions
South end	I-81 at the Maryland state line near Greencastle
	US 30 in Chambersburg; US 11 in Carlisle; PA 581 near Camp Hill; US 22 / US 322 in Harrisburg; I-83 / US 322 in Colonial Park; I-78 in Lickdale; I-80 near Hazleton; PA 309 in Wilkes-Barre; I-84 / I-380 / US 6 in Dunmore; I-476 / Penna Turnpike NE Extension / US 6 / US 11 near Scranton;
North end	I-81 at the New York state line near Hallstead
Location
Country	United States
State	Pennsylvania
Counties	Franklin, Cumberland, Dauphin, Lebanon, Schuylkill, Luzerne, Lackawanna, Susquehanna
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future; Pennsylvania State Route System; Interstate; US; State; Scenic; Legislative;

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 Legion Memorial Highway. The interstate enters the state near the borough of Greencastle, serving the boroughs of Chambersburg and Carlisle, before reaching Harrisburg, the capital. After that, it climbs into the Pocono Mountains to run through the Wyoming Valley, then exits into New York. It is the longest north–south Interstate in Pennsylvania.^[2]

^ "Table 1: Main Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways". FHWA Route Log and Finder List. Federal Highway Administration. December 31, 2021. Retrieved July 18, 2022.
^ Kitsko, Jeffrey (September 30, 2014). "Interstate 81". Pennsylvania Highways. Retrieved January 9, 2019.