There's heavy traffic & a 2-mile backup on WB I-80 from the SR267 junction to the chain control check point near exit 184 in Truckee. No traffic incidents reported. WB traffic flowing over Donner Summit under chain controls. Please drive to arrive safely to your destination. pic.twitter.com/ReVMTIdJRW

— Caltrans District 3 (@CaltransDist3) January 15, 2023