New post on http://twitter.com/caltransdist3 : trafficalert Big rig overturned EB I-80 just east of Boca near CA/NV state line. Only one lane open. Motorists should expect delays. No ETO at this time. Please slow for highway workers - Caltrans, CHP, Towing and others! http://pic.twitter.com/OozxRLmytk