The vehicle got jammed under the trestle on Marin Boulevard at 18th Street just after 8 a.m.
The tractor-trailer was loaded with recycled cardboard that had to be removed.
Nearby roads were jammed as authorities decided how to clear the rig.
NJ Transit train service was not affected.
---
Do you have something to add to this story? Click here to contact Eyewitness News.