Key Points
- A six-vehicle chain-reaction crash occurred on southbound Interstate 405 near the Coal Creek Parkway ramp in Bellevue, Washington, late Tuesday night; three people were injured and taken to hospital.
- The collision was reported at 10:16 p.m. at approximately milepost 10.2, according to the Washington State Patrol report.
- Vehicle one failed to decelerate and struck the rear of vehicle two, causing vehicles two through six to collide in succession.
- Vehicle one was left in the left lane while the remaining vehicles came to rest on the right shoulder, and southbound I-405 was blocked near the ramp for about four hours.
- The Washington State Patrol named DUI as the cause of the crash, and the driver of the first vehicle was arrested on suspicion of DUI and vehicular assault.
Bellevue (King County Insider) June 24, 2026 -What happened in the chain-reaction crash on I-405 near Coal Creek Parkway and who was involved?
Bold it.
A late-night multi-vehicle collision on southbound Interstate 405 near the Coal Creek Parkway ramp left three people injured and forced a lengthy closure of the roadway after what the Washington State Patrol described as a chain-reaction crash caused when the lead vehicle failed to slow and struck a stopped vehicle in traffic, officials said.
Who reported the time and location of the collision and what did the official report say?
As reported by the Washington State Patrol in its incident summary, the crash was called in at about 10:16 p.m. at milepost 10.2 on southbound I-405 at the Coal Creek Parkway ramp, where traffic had been stopped in the left lane.
How did the crash occur and how many vehicles were involved?
According to the Washington State Patrol’s account, six vehicles were involved in a chain-reaction collision: vehicles two through six were stopped for traffic in the left lane when vehicle one failed to decelerate and struck the rear of vehicle two, triggering the subsequent impacts that involved all six vehicles.
Were there injuries and where were the injured taken?
Emergency responders transported three people with injuries to area hospitals; the Washington State Patrol confirmed that three individuals were taken to medical facilities for treatment following the crash.
Was alcohol or impairment a factor and were any arrests made?
The Washington State Patrol named impairment related to driving under the influence as the cause of the collision and arrested the driver of the first vehicle on suspicion of DUI and vehicular assault, the agency said in its report.
How long was I-405 blocked and where did the vehicles end up after the crash?
Traffic remained blocked southbound near the Coal Creek Parkway ramp for about four hours while first responders and investigators cleared the scene; vehicle one came to rest in the left lane while the remaining vehicles were pushed onto the right shoulder, the patrol said
What did traffic and emergency operations do at the scene?
State patrol troopers, local fire and EMS units, and towing services responded to the multi-vehicle collision, directing traffic, treating the injured and removing wreckage so the highway could be reopened after several hours, according to the incident report.
Additional details from the official report: what else did investigators note?
Investigators noted the sequence of impacts began when a moving vehicle failed to decelerate into stopped traffic, producing rear-end impacts that cascaded through the lane; the official report listed DUI as the primary contributing factor and indicated the first vehicle’s driver was detained and later arrested on suspicion of DUI and vehicular assault.
Why is this crash notable for drivers on I-405 and what are the immediate safety implications?
The Washington State Patrol emphasized that high-speed approaches to stopped traffic present heightened risks for multi-vehicle collisions, and this incident illustrates how failure to reduce speed in time can produce chain-reaction crashes that injure multiple people and cause prolonged closures on a major corridor.
Background of the development
What is the local history of crashes at this location and how does enforcement address DUI-related collisions?
I-405 is a busy north–south corridor serving Bellevue and neighboring communities, and ramps such as Coal Creek Parkway are frequent sites of congestion during evening hours, creating conditions where sudden stops can lead to rear-end and chain-reaction collisions; Washington State Patrol traffic reports show that enforcement for impaired driving and public-awareness campaigns remain primary tools to reduce DUI-related crashes, though specific historical crash counts at milepost 10.2 were not detailed in the immediate incident report
Prediction:
If follow-up investigations confirm impairment as the causal factor and enforcement continues to classify similar nighttime crashes as DUI-related, local law enforcement and transportation planners may intensify targeted patrols, DUI checkpoints, and public-safety messaging focused on reducing speed in congestion to minimize rear-end chain collisions; commuters should expect occasional ramp closures and increased enforcement operations during peak evening periods, which could temporarily slow travel but aim to reduce repeat incidents in the longer term
