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Auburn, WA (May 22, 2026) – A 50-year-old driver lost their life following a four-vehicle collision on State Route 18 near Southeast 231st Street on Thursday, May 21.
Investigators said the chain-reaction crash began when a westbound vehicle traveling in the second lane crossed through the median and entered the eastbound lanes. An eastbound driver attempted to avoid the oncoming vehicle by steering left, but the two vehicles collided when the westbound vehicle struck the front passenger side of the other car.
After the initial contact, the westbound vehicle moved into the first eastbound lane and hit a third vehicle head-on. The car then spun around, and its rear struck the front of a fourth vehicle traveling in the same direction.
The two vehicles involved in the head-on crash came to rest in the first eastbound lane and along the right shoulder. The fourth vehicle stopped on the left shoulder of the eastbound SR-18. The driver of the westbound vehicle was pronounced dead at Harborview Medical Center. Officials stated the person had been wearing a seat belt.
Traffic remained blocked for about four hours and 26 minutes while emergency units cleared the roadway and gathered evidence. The people involved in the other vehicles were not publicly identified.
Detectives are still working to determine all factors that led to the fatal chain-reaction collision. We extend our heartfelt condolences to the family and friends mourning this loss.
Why Median Crossovers Tend to Lead to Severe Highway Crashes
Median crossover crashes are often among the most serious types of highway collisions because they can place vehicles directly into opposing traffic at high speeds. On divided highways, medians are designed to separate traffic in opposite directions and reduce the risk of head-on collisions. When a vehicle crosses that barrier, drivers in approaching lanes usually have only seconds to react.
These crashes may involve multiple vehicles in a short period, especially on busy roads with fast-moving traffic. Investigators often review roadway markings, weather, driver actions, and vehicle movement patterns to better understand how the sequence unfolded. Seat belt use, lane position, and the final resting places of the vehicles can also provide valuable information. In many cases, traffic disruptions last for hours while crews remove damaged vehicles and document evidence from the roadway.
