The trooper stopped a 49-year-old woman driving a Honda Accord northbound I-5 by Smokey Point.
She pulled to the right shoulder, with the trooper parking in front of her.
The woman, from Stanwood, was having mechanical issues with her car and was unable to stop, Trooper Mark Francis said.
She hit the trooper's car between 10 and 15 mph, causing $1,000 in damage.
The trooper was taken to Providence Regional Medical Center's Colby campus as a precaution, Francis said.
It was unclear what the mechanical issue was or the original reason the trooper stopped the woman.
The incident is under investigation with charges pending, Francis said.
More Local News Headlines
Warm waters bring more restrictions on salmon fishing in Tulalip Little is known about bull kelp, which nearly all marine life here relies on Sound Transit succumbs to ‘cost of doing business’ Stanwood-Camano fair expands activities for children Two seek to oust Noble from Edmonds School Board seat Paine Field passenger flights resound with Mukilteo voters Front Porch: Camano Island Library grand opening Crews try to save man pulled from Stillaguamish River
Our new comment system is not supported in IE 7. Please upgrade your browser here.