Arizona State Route 289
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State Route 289 (SR 289) is a highway in Santa Cruz County, Arizona that runs from its junction with Interstate 19 in north of Nogales to Penna Blanca Lake. It is an east-west route.
SR 280 is a short, 10 mile route that passes through sparsely inhabited territory and does not pass through any cities or towns. It primarily serves as access for Penna Blanca lake.