A rockslide and flooding have caused a portion of Interstate 40 to be shut down near the North Carolina-Tennessee state line.The rockslide happened just east of Exit 451 (Waterville Road) in Cocke ...

While I-40 spans 2,554.22 miles from California to North Carolina, it is not the longest interstate in the country. I-40 is the country's third-longest interstate, according to WorldAtlas.