Current route: JCT I-40 at Seligman to JCT I-40 at Kingman
Since: 1984
Historic route: Part of US 66

This is the longest remaining drivable section of US 66 in the US. It was initially signed with a marker as shown above, but most of these have been replaced with HISTORIC US 66 markers.

The green guide signs use the standard black-on-white Arizona shields.

Technically, the portion in Yavapai County is not a state highway. ADOT doesn't like numbered routes that serve the same two points (Ash Fork and Kingman in this case).

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Last updated 8/28/2002