A tanker carrying propane overturned on I-476 southbound at the ramp to I-95 in Ridley Township, Delaware County.
It happened around 2:30 p.m. Tuesday afternoon.
I-95 is currently closed in both directions. Commuters should expect delays in the area. Cameras show traffic backed up for miles.
No word on injuries at this time.
This is a developing story, please stay with FOX 29 for updates.