This is what can force I-5 through the Grapevine to close during a winter storm
Kern County got its first winter storm of the season over the weekend which brought a nearly 12-hour closure of the I-5.
Freeze watch remains in effect as roads reopen after cold snap closes Grapevine
Icy conditions closed Interstate 5 between the Grapevine and Castaic Monday morning with weather authorities issuing warnings about pre-dawn freezes Tuesday and Wednesday. Crews were working to de-ice ...