Overview

• The incident began just after 9 a.m. Wednesday when a northbound dump truck lost its left rear tire in Lindon.
• The tire bounced over a wall and struck two vehicles, causing minor injuries, according to the Utah Highway Patrol.
• As traffic slowed for troopers after the initial incident, a stopped passenger car was rear-ended by a semi-truck.
• The resulting collision involved five vehicles, leaving one person in critical condition and another in serious condition.
• Northbound I-15 is closed near mile post 273, and authorities have not said when lanes will reopen as the investigation continues.