Map of US highway 93
US 93 is represented by the purple line from Roosville MT to Wickenburg AZ. US 93 was routed along the red line through southern Idaho; at the time modern US 93 through the area was signed as "Alternate US 93". Another US 93A exists today, south of Wells NV (shown in blue). The green line between Phoenix and Wickenburg is currently a segment of US 60, but I believe that segment should be redesignated as an extension of US 93. (I would terminate US 60 in Tempe, and redesignate US 60 between Wickenburg and Brenda as an extension of AZ hwy. 74).