These MasterPieces 24" x 18" 550PC puzzle. US 66 underwent many improvements and realignments over its lifetime, but was officially removed from the United States Highway System in 1985 after it had been replaced in its entirety by segments of the Interstate Highway System. Portions of the road that passed through Illinois, Missouri, New Mexico, and Arizona have been communally designated a National Scenic Byway of the name "Historic Route 66", returning the name to some maps. Take a trip down Route 66 on the original America's highway. To reduce their impact on our environment, the chipboard used in these puzzles is made of recycled material.