The PA turnpike and NJ Turnpike charge about the same per mile if one drives the entire length of each road at 10 - 11 cents per mile. The biggest toll rip off is the Delaware Turnpike that charges $4 each way to travel about 15 miles for 27 cents per mile going from the Delaware Memorial Bridge to the MD state line.
I call that the entrance and exit fee for Delaware. US 40 is a couple miles east of I-95 and has no toll
The actual turnpike covers about 11 miles of highway, at about 36 cents per mile.