It happened shortly before 2 p.m. in the southbound lanes near the Churchmans Road exit.
Investigators say the victim, only identified as a woman in her 20's, got out of a stopped vehicle and attempted to run across the lanes of the highway.
That's when she was hit by a black Honda.
She was rushed to the hospital with multiple injuries, including a possible broken leg.
There was no immediate word as to why the woman was trying to run across the highway.
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