The pedestrian was hit about 3:30 p.m. on I-295 northbound in Mount Laurel near mile-marker 38, according to initial reports.
An unconfirmed report said the victim suffered a severe leg injury, and that a second advanced life support team was requested.
The state Department of Transportation was requested to close down part of the highway.
The medevac unit was down due to poor flying conditions.
New Jersey State troopers were investigating.
This is a developing news story.
CHECK BACK FOR UPDATES
Click here to follow Daily Voice Washington Township and receive free news updates.