New post on http://twitter.com/caltransdist3 : CHP and Emergency personal working a big rig crash, SB I-5 south of Richards Blvd. Road Closures will begin at 8:00PM. I-5 will be closed at I-80. All lanes expected to be closed for 3-4 hours for clean up. Avoid area and choose alternate routes. chp http://pic.twitter.com/xxqXXvxQkE