Current route: JCT US 70 at Duncan to JCT US 191/AZ 78 at Threeway
A shortcut route between US 191 and US 70. Threeway is called such despite being a four-way intersection because US 666 used to connect further north. It still has three distinct route numbers: US 191, AZ 75, and AZ 78.
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Last updated 8/28/2002