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Seattle, WA (June 12, 2026) – One person was injured in a multi-vehicle accident involving several vehicles on Interstate 5 northbound at South Spokane Street in Seattle on Wednesday evening.
The crash was reported shortly after 6 p.m. and initially involved multiple vehicles, including a semi-truck, according to Washington State Patrol. Authorities confirmed that one person had to be removed from a vehicle after becoming trapped.
That person was taken for medical care and was reported to be in stable condition. The total number of people injured has not been confirmed.
All northbound lanes were temporarily blocked following the collision, but were reopened about an hour later once vehicles were cleared from the highway.
The cause of the crash remains under investigation as officials continue to review the circumstances.
Why Multi-Vehicle Highway Crashes Can Quickly Disrupt Traffic
Highway crashes involving multiple vehicles can lead to rapid traffic congestion because they often block several lanes at once. When large vehicles, such as semi-trucks, are involved, removal efforts can take longer due to their size and weight.
In some cases, occupants may become trapped inside vehicles, requiring careful extraction before they can be moved for medical care. This can extend roadway closures even after injuries are stabilized.
Investigators typically examine lane positions, speed patterns, and vehicle spacing to understand how multi-vehicle chain reactions begin. On busy interstates, even a single sudden slowdown can trigger a cascade of effects across multiple lanes of travel.
