The I-80 through Wyoming is a mess. Lots of semis piled up, a couple people dead. This will take 12 - 24 hours to clear out. This video is exceptional in showing up close what the inside of a pile up looks like

A stretch of Interstate 80 between Cheyenne and Laramie, Wyoming, remained closed Friday morning, more than 15 hours after major wrecks involving dozens of semi trucks forced police to close it down.

about 50 commercial and 20 private vehicles were involved

  http://www.weather.com/news/news/snow-blinds-drivers-along-i-80-in-wyoming