Details of closures at Dartford Crossing of next four nights By peterg - April 11, 2016 0 241 FacebookTwitterLinkedinEmailPrint HERE are details of road closures close to the Dartford Crossing for four nights from Monday April 11th to Thursday April 14th. Junction 31-30 will be closed from 10pm to 5.30am. Diversion via link road btwn j31 and 30.