LAS VEGAS (KSNV) — Police suspect one driver got into three crashes on Interstate 15 in the central Las Vegas valley Monday morning, resulting in heavy traffic in both directions. Collisions on both sides of the interstate near Sahara Avenue had cars moving toward a crawl. On the northbound side, authorities were blocking at least three lanes for a crash. The scene has been cleared, though some residual backup is expected to continue. Southbound traffic was backed up past the Spaghetti Bowl and toward Lake Mead Boulevard. Lt. Jeff Dean with Las Vegas Metropolitan Police said a Toyota SUV was...