The study found that 30 percent of the Keystone state's roads are in poor condition, costing drivers $610 per year.
PennDOT officials say their numbers show the state is actually in better shape than what's reflected in the study.
A PennDOT spokesperson said 23 percent of Pennsylvania's roads are considered to be poor.
In New Jersey, 34 percent of the roads are considered poor, costing drivers roughly $700 per year.
Delaware fared better with 19 percent of the roads in poor condition, putting them in 38th place.