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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.
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