Success Valley Drive is a 5.4-mile mountain highway located in the Sierra Nevada foothills east of Porterville. The roadway (assigned as Tulare County Mountain Road 160) follows the South Fork Tule River from County Route J42 northwest to California State Route 190 near Lake Success. Success Valley Drive has been present in Tulare County since the 1870s and was heavily used during the Tule River magnesite boom in the early twentieth century.
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