Interstate 81 in Pennsylvania

This article is about the section of Interstate 81 in Pennsylvania. For the entire route, see Interstate 81.
See also: Capital Beltway (Harrisburg)

Interstate 81 marker
Interstate 81
American Legion Memorial Highway
Map
I-81 highlighted in red
Route information
Maintained by PennDOT
Length232.76 mi[1] (374.59 km)
NHSEntire route
Major junctions
South end I-81 at the Maryland state line near Greencastle
Major intersections
North end I-81 at the New York state line near Hallstead
Location
CountryUnited States
StatePennsylvania
CountiesFranklin, Cumberland, Dauphin, Lebanon, Schuylkill, Luzerne, Lackawanna, Susquehanna
Highway system
← PA 80→ PA 81

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]

  1. ^ "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.
  2. ^ Kitsko, Jeffrey (September 30, 2014). "Interstate 81". Pennsylvania Highways. Retrieved January 9, 2019.