A truck driver who plowed into stalled traffic and sparked a huge crash has been charged with four counts of vehicular homicide, police tell NBC News. Rogel Lazaro Aguilera-Mederos, 23, was carrying lumber in Denver on Thursday when his semi hit Interstate 70 traffic stymied by an earlier accident. "Stemming from interviews and evidence that was gathered overnight ... the proximate cause of the crash is on the driver of the semi," says Lakewood Police Department Agent Ty Countryman. "The carnage was significant—just unbelievable." The crash triggered a massive fire and damaged a bridge that now needs two to four inches of asphalt replaced. NBC 9 Colorado video shows vehicles ablaze and wood pieces all over the highway.
Comedian and vlogger Josh McCutchen was stuck in traffic when his camera caught the semi blowing past. "Oh my God!" he yelled. He soon saw "plumes of black smoke ahead," he later said, and drove up to discover fire "shooting off the sides of the overpass. It was crazy." Nearby panhandler Darin Barton is being recognized for dropping his sign and pulling people from their cars: "As soon as I [saw] flames, I headed under the bridge, grabbed three or four people out of a couple cars," he tells KDVR. "I didn't do this all myself. There were other people in traffic that helped." Aguilera-Mederos, a Cuban living legally in Texas with a green card, was injured but not seriously. His brother tells CNN the truck's brakes failed, but if that's true vehicular manslaughter charges could still apply. (Read more car crash stories.)