Complex sentence: At Interstate 70 exit 11, U.S. Route 6 ends its concurrency with Interstate 70 and begins using the old highway alignment directly north of Interstate 70 while it travels through the communities of Mack, Loma, and Fruita.
Split into simpler sentences: At Interstate 70 exit 11, U.S. Route 6 ends its concurrency with Interstate 70 and begins using the old highway alignment directly north of Interstate 70. It then travels through the communities of Mack, Loma, and Fruita.