In the 1960s and 1970s, the growing Interstate Highway System brought in toll-free segments of newly built I-77 from Ohio to the north, and Virginia to the south ends of the turnpike. I-64 was completed from the Kentucky border east to Charleston.
During the 1960s and 1970s, the expansion of the Interstate Highway System led to toll-free sections being added to newly constructed I-77 from Ohio to its northern terminus and Virginia to its southern end.  I-64 was completed from the Kentucky border eastward to Charleston.