The crossing had always been tolled, and from 1 April 2003 this became a charge, though since 2008 it has been free from 10 pm to 6 am. An automatic number plate recognition charging scheme (Dart Charge) began in November 2014. As a result, the charge can no longer be paid in cash and the old toll booths have been removed. A residents' scheme is available, offering further discounts for people living near the crossing.
Based on the above text, what's the best answer to this question: do you have to pay for the dartford bridge?
yes