UPDATE: Snow In The Grapevine Temporarily Closes 5 Freeway At Castaic UPDATE: The southbound side of the I-5 Freeway in of Castaic has been reopened Thursday afternoon after being temporarily closed as a result of snow and low visibility in the Grapevine. Original Story: As of 12:50 p.m. Thursday, the southbound 5 Freeway is closed to Lake Hughes Road in Castaic, however, motorists wanting to turn around can do so by utilizing the center median gate which is located just north of Lake Hughes Road, according to California Highway Patrol officials. Update 2: CHP running escorts on NB & SB I-5 in the Grapevine. A brief storm cell dropped snow & ice/hail & is moving on. Caltrans trucks are plowing & spreading de-icer. https://t.co/xbyTKqK844#grapevine@CaltransDist6@CHPFortTejon@BakersfieldChp@CHP_Newhallhttps://t.co/0VdZ7Vzgv0