Drivers heading back to southern California from Las Vegas were facing a long, slow trip Sunday morning.
Regional Transportation Cameras showed crowded conditions on southbound I-15 from the Sloan area (just south of Las Vegas) all the way toward Primm at the state line.
The RTC tweeted that back-ups were already 10 miles long at 9:13am.
Stay with 8NewsNow on air and online for updates as this developing story evolves.