A three-mile stretch of Highway 99 was closed for more than five hours Saturday after dense fog led to a massive vehicle pileup in Tulare County, about 40 miles north of Bakersfield. The California Highway Patrol said 59 vehicles were involved in the crash that occurred around 8 a.m. The highway reopened midafternoon. Several people sustained mild to moderate injuries and some were taken to a local hospital, according to CHP Visalia.