UPDATE 4 p.m.: The fast lane of southbound Highway 101 south of Santa Barbara Road in Atascadero has reopened, according to Caltrans.
Original story: A power failure at an asphalt facility in Santa Margarita has closed the fast lane of southbound Highway 101 south of Santa Barbara Road in Atascadero for about a half-mile, according to Caltrans.
The fast lane is estimated to be reopened by 3 p.m. today.
Caltrans suggests drivers use an alternate route if possible.
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