Complex sentence: The part of I-22 east of Fulton, Mississippi, was approved in 1978 as Corridor X, part of the Appalachian Development Highway System, and parts of the highway have been under construction ever since.
Split into simpler sentences: The part of I-22 east of Fulton, Mississippi, was approved in 1978 as Corridor X, part of the Appalachian Development Highway System. Parts of the highway have been under construction ever since.