Current route: JCT I-10 at Tucson to Navajo Reservation boundary
Historic route: Oracle Jct. to Holbrook

The southern section of AZ 77 replaced US 89 from Oracle Jct. into Tucson when it was decertified, and follows what was Business Loop I-10 (and previous to that, AZ 84) back to I-10.

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Last updated 7/29/1998