(Francisco Kjolseth | The Salt Lake Tribune) Heavy equipment crews work to clear Provo Canyon on Friday, Jan. 18, 2019, after an avalanche, which brought down as much as 30 feet of snow at mile marker 12 above Bridal Veil Falls on SR 189, was triggered by Utah Department of Transportation crews on Thursday. A side road next to Provo canyon was allowing cars through as they cleared the area knowns as Slide Canyon.