Interstate 70 in Pennsylvania

Interstate 70 (I-70) is a state highway that is located in the Commonwealth of Pennsylvania in the United States. It runs east to west across the southwest part of Pennsylvania and serves the southern fringe of the Pittsburgh metropolitan area.

This article is about the section of Interstate 70 in Pennsylvania. For the entire route, see Interstate 70.

Interstate 70

I-70 highlighted in red
Route information
Maintained by PennDOT and PTC
Length167.92 mi (270.24 km)
NHSEntire route
Major junctions
West end I-70 at the West Virginia state line
Major intersections
  • I-79 / US 40 / US 19 / PA 18 in Washington

  •  PA Turnpike 43 in Fallowfield Township
  • PA 51 in Rostraver Township

  •  I-76 Toll / Penna Turnpike / US 119 / PA Turnpike 66 in New Stanton
  • US 219 near Somerset
  • I-99 / US 30 / US 220 in Bedford

  •  I-76 Toll / Penna Turnpike in Breezewood
  • US 30 in Breezewood
  • US 522 near Warfordsburg
East end I-70 / US 522 at the Maryland state line
Location
CountryUnited States
StatePennsylvania
CountiesWashington, Westmoreland, Somerset, Bedford, Fulton
Highway system
  • Main
  • Auxiliary
  • Suffixed
  • Business
  • Future
  • Pennsylvania State Route System
  • Interstate
  • US
  • State
  • Scenic
  • Legislative
← PA 69→ PA 70
← PA 125PA 126→ PA 127

About half of this route is concurrent with I-76 on the Pennsylvania Turnpike, which is a toll road. This is the oldest segment of I-70 in Pennsylvania, having been completed in 1940, and is only one of two segments of I-70 that are tolled, with the other being the Kansas Turnpike.

I-70 is one of only a few Interstate Highways to have a traffic signal—in this case, with U.S. Route 30 (US 30) in Breezewood, where it leaves the Pennsylvania Turnpike and heads toward Maryland.

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