UPDATE (4:51 p.m.) - Highway 166 has reopened in both directions between Highway 101 and Maricopa.
(12:40 p.m.) - The California Highway Patrol shut down Highway 166 from Highway 101 to Maricopa early Thursday afternoon, after multiple vehicle crashes and poor weather conditions near the intersection with Highway 33.
Highway 33 was also closed just south of Highway 166.
Heavy traffic is slowing down travel on Highways 101 and 46 as a result of those closures, as well as the closure of Interstate 5 at the Grapevine because of snow.
❄️🚧CURRENT HIGHWAY CLOSURES🚧❄️— Caltrans District 7 (@CaltransDist7) December 26, 2019
As of 12:30 PM
I-5 Grapevine — Parker Rd in Castaic to Grapevine Rd in Kern County
SR-33 — Wheeler Gorge to SR-166
SR-2 / Angeles Crest Hwy — Angeles Forest Boundary to Islip Saddle
DURATION UNKNOWN. Check https://t.co/cxZ0jVPIRf for latest. pic.twitter.com/hm7EozSmhB
Highways 46 and 58 are recommended detours for travel between the coast and inland valleys, according to Caltrans. Highway 101 is also a detour for drivers heading north or south and unable to use Interstate 5.
On Thursday morning, the California Highway Patrol says a big rig driver was found dead in a truck stopped on the Tejon Pass. It's unknown whether the death was related to the snowfall. The CHP says the driver was not involved in a crash and the death could be a medical condition.
AAA said Thursday, Dec. 26, was expected to be the worst day for holiday travel, especially for those driving.