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(KSL News) -- An overturned semi clogged rush-hour traffic today on Interstate 15, near Layton Hills Mall.
Troopers say a car merging into northbound traffic collided with a semi-trailer.
The semi rolled over, blocking all northbound lanes for two hours.
The road wasn't completely cleared until about 9 p.m.
The truck was carrying food products that had to be unloaded before it could be moved.