New post on http://twitter.com/caltransdist3 : TrafficAlert Icy conditions remain on I-80. Chain controls still in effect Hwy 49 Sierra City to Sierraville and Hwy 89 Sierraville to Onion Valley 17 miles north of Truckee. Take it slow and watch out for snow removal equipment. http://pic.twitter.com/PfqzJzUsEh