INTERSTATE 70 (I-70) IN UTAH

 

Interstate 70 (I-70) is a mainline route of the Interstate highway System connecting Utah and Maryland. The Utah section runs east-west for approximately 232 miles across the central part of the state.  Unlike most Interstate Highways, much of 1-70 in Utah was not constructed parallel to or on top of an existing U.S. Highway. Portions of 1-70 were constructed areas where previously there were no paved roads. Because it was built over an entirely new route, I-70 has many features that are unique in the Interstate Highway System. For example, the 110 miles between Green River and Salina makes up the longest distance anywhere in the Interstate Highway System with no motorist services. This same piece is noted as the longest highway in the United States built over a completely new route since the Alaska Highway, and the longest piece of Interstate Highway to open at a given time.

I-70 Between Green River and Salina, Utah