When traffic comes to a standstill on a remote Wyoming highway, most of us expect the usual: a routine construction delay or a passing pilot car. But last Friday afternoon, June 26, a routine construction backup on U.S. Highway 20/26 turned into a scene of catastrophic devastation.
New details released this week by the Wyoming Highway Patrol (WHP) have finally shed light on exactly what caused the horrific multi-vehicle crash that claimed two lives, injured eight others, and shook a remote stretch of Natrona County.
The Cause: Diver Inattention in a Construction Zone
According to the official WHP fatal crash summary released on Wednesday, July 1, the disaster was triggered by a commercial tanker truck driver who failed to stop for traffic queuing to enter a one-lane construction zone.
The crash happened at 1:50 p.m., roughly 45 miles northwest of Casper near mile marker 58.3. Investigators have cited driver inattention as a primary contributing factor. The 2024 Western Star tanker truck slammed into a line of stopped vehicles, initiating a violent chain reaction that ultimately engulfed eight separate vehicles and a total of 17 people.
The vehicles struck in the pileup included a Chevrolet Silverado, a Toyota Highlander, a Toyota 4Runner, a Subaru Outback, a Chevrolet Camaro, a Ram 1500, and a Chevrolet Impala.
While the investigation remains active, the WHP stated that information regarding potential criminal charges will not be released until the full inquiry is completed.
Victims Identified as Colorado Couple
The Natrona County Coroner’s Office has identified the two individuals who lost their lives as James Faris Cox, 74, and Susan Horn Cox, 69, of Golden, Colorado. Family members shared that the couple had been traveling to Ennis, Montana. State troopers noted that despite the sheer force of the impact, both were wearing their seatbelts.
The crash also left eight others injured, including small children. A 1-year-old and a 3-year-old riding in the Toyota Highlander survived the crash. The 3-year-old and an adult male were airlifted via life-flight to Banner Wyoming Medical Center, while the 1-year-old and an adult female were taken by ground ambulance. Fortunately, they—along with several others transported to the Casper hospital—were treated and released. The driver and passenger of the 4Runner were also hospitalized.
The “Wyoming Way” Shines Through the Wreckage
Because the collision occurred on a remote stretch of highway, it took emergency personnel and paramedics roughly 30 minutes to navigate to the scene. In those critical moments before help arrived, ordinary citizens stepped up in extraordinary ways.
Witnesses described a scene where roughly 10 motorists immediately leaped out of their cars to help. Strangers scavenged for fire extinguishers, grabbed medical kits, provided water, and comforted the trapped and injured.
Krista Nethercott, a motorist and funeral director who ran toward the wreckage to assist, recounted staying by Susan Cox’s side so she wouldn’t be alone in her final moments. Other bystanders focused on a young child safely secured in a car seat while comforting his injured father.
The Natrona County Fire District later released a statement expressing profound gratitude for the actions of these bystanders, praising them for offering emotional support, minor patient care, and even shelter during a passing thunderstorm. They noted that “the true spirit of the ‘Wyoming Way’ was in full force.”
A Reminder for the Summer Driving Season
As investigators continue to piece together the final details of this tragedy, it stands as a stark and sobering reminder for all motorists. Summer in Wyoming means beautiful road trips, but it also means heavy construction zones and unexpected delays.
When driving through remote areas, compliance with construction warnings and undivided attention to the road are matters of life and death. Our hearts go out to the Cox family and all those recovering from this devastating event.



