Route Description
See also: Pennsylvania Turnpike and Interstate 76 (east)Two segments of I-70 in Pennsylvania are not designed to modern Interstate standards: a 37-mile segment from Washington to New Stanton, and the aforementioned half-mile signalized segment in Brezewood.
For 37 miles between the eastern end of its concurrency with I-79 in Washington and the western end of its concurrency with the Pennsylvania Turnpike in New Stanton, I-70 has several dated design features. The median narrows to the point that there are no shoulders between the median barrier and the passing lanes on both sides. On- and off-ramps at many of the interchanges are substandard in both length and geometry, which requires vehicles to decelerate in the travel lanes before entering the off-ramps, and also necessitates the use of stop signs on the on-ramps instead of yield signs. Several overpasses do not meet minimum clearance requirements, which has resulted in damage to, and from, overheight trucks.
I-70 crosses the Monongahela River on the Speers-Belle Vernon Bridge and the Youghiogheny River on the Smithton High Level Bridge. In New Stanton, I-70 exits the main highway alignment to merge with the Pennsylvania Turnpike (I-76). The main alignment itself continues as U.S. 119 with an exit for PA 66.
For 86 miles from New Stanton to Breezewood, I-70 shares a concurrency with I-76 along the Pennsylvania Turnpike. I-70 passes through a wind farm in Somerset County, and close to the 9/11 Flight 93 National Memorial in Shanksville. It then intersects I-99 in Bedford County before reaching the eastern end of its concurrency with the Turnpike in Breezewood.
In Breezewood, I-70 exits the Pennsylvania Turnpike and begins a half-mile wrong-way concurrency with U.S. 30. This is the other segment of the highway in Pennsylvania that is not designed to Interstate standards since it lacks grade separation and access control. I-70 then takes a north/south alignment between Breezewood and the Maryland state line, with the eastern terminus of I-68 less than a mile past the state line near Hancock. U.S. 522 also forms a four-mile concurrency with I-70 between Warfordsburg and Hancock.
Read more about this topic: Interstate 70 In Pennsylvania
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