Interstate 40 by FlaxmanR

Question 10

Its parent route was decommissioned in 1985, which was later used as part of the justification to renumber it. What was the former number of US Route 491, which today has its southern terminus at I-40 in Gallup, New Mexico, renumbered in 2003 mostly due to the efforts of then-governor Bill Richardson, who euphemistically stated that the change should be made because of the “inopportune naming of the road?”