Interstate 79

Interstate 79
I-79 highlighted in red
Route information
Maintained by WVDOH and PennDOT
Length	343.46 mi[1] (552.75 km)
Existed	1958–present
NHS	Entire route
Major junctions
South end	I-77 near Charleston, WV
Major intersections	US 33 / US 48 / US 119 near Weston, WV US 50 near Clarksburg, WV I-68 near Morgantown, WV I-70 near Washington, PA I-376 / US 22 / US 30 near Carnegie, PA I-279 in Franklin Park, PA I-76 / Penna Turnpike in Cranberry Township, PA I-80 in Findley Township, PA I-90 in McKean, PA
North end	PA 5 / PA 290 / Bayfront Parkway in Erie, PA
Location
Country	United States
States	West Virginia, Pennsylvania
Counties	WV: Kanawha, Roane, Clay, Braxton, Gilmer, Lewis, Harrison, Marion, Monongalia PA: Greene, Washington, Allegheny, Butler, Lawrence, Mercer, Crawford, Erie
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future
← WV 78 WV → WV 80 ← PA 78 PA → PA 79 ← PA 178 PA → PA 179

Interstate 79 (I-79) is an Interstate Highway in the Eastern United States, designated from I-77 in Charleston, West Virginia, north to Pennsylvania Route 5 (PA 5) and PA 290 in Erie, Pennsylvania. It is a primary thoroughfare through western Pennsylvania and West Virginia and makes up part of an important corridor to Buffalo, New York, and the Canada–United States border. Major metropolitan areas connected by I-79 include Charleston and Morgantown in West Virginia and Greater Pittsburgh and Erie in Pennsylvania.

In West Virginia, I-79 is known as the Jennings Randolph Expressway, named for the West Virginia representative and senator. In the three most northern counties, it is signed as part of the High Tech Corridor. For most of its Pennsylvania stretch, it is known as the Raymond P. Shafer Highway, named for the 39th Pennsylvania governor.