Interstate 81 (I-81) is a highway in the eastern United States that runs for 855 miles from Tennessee to New York. The stretch in the state of Pennsylvania has a length of 232.6 miles and crosses the counties of Franklin, Cumberland, Dauphin, Lebanon, Schuylkill, Luzerne, Lackawanna, and Susquehanna. The highway begins near Greencastle at the Maryland state line, and ends close to Hallstead at the New York state line. The route is also known as American Legion Memorial Highway.
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