It happened around 11:30 a.m. Sunday on the westbound off ramp of Woodhaven Road towards Route 1.
Initial reports indicate that the woman in her 40s was set on fire - possibly with a blow torch.
The victim was taken to Temple Hospital's Burn Unit with 2nd and 3rd degree burns to her chest and arms. Officials say she is expected to survive.
Authorities say it appears a domestic dispute led to the incident.
Parts of Woodhaven Road were shut down as police investigated.
