SNOHOMISH COUNTY, Wash. — All lanes of southbound Interstate 5 were closed near Stanwood in Snohomish County after a serious crash.
The lanes have since reopened.
The Washington State Department of Transportation first reported the incident just north of 300th Street Northwest at 4:37 a.m. Tuesday.
It is not yet known how many cars were involved or if anyone was hurt.
As of 5 a.m., traffic was backed up about 4 miles.
All lanes reopened shortly before 6 a.m.