| Interstate 77 |
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Information AboutInterstate 77 |
Interstate 77 (abbreviated '''I-77''') is an Interstate Highway in the eastern United States . It traverses diverse terrain, from the mountainous state of West Virginia to the rolling farmlands of North Carolina and Ohio . It largely supplants the old U.S. Highway 21 between Cleveland, Ohio , and Columbia, South Carolina , as one of the best north-south corridors through the middle Appalachians . The southern terminus of Interstate 77 is in Columbia at the junction with Interstate 26 . The northern terminus is in Cleveland at the junction with Interstate 90 . The East River Mountain Tunnel is one of only two instances in the United States where a mountain ''road'' tunnel crosses a state line. The other one is the Cumberland Gap Tunnel , connecting Tennessee and Kentucky . ROUTE DESCRIPTION
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