The M25 near Dartford crossing has been completely closed in each direction this afternoon after an accident.
The accident involves two vans and a car. Bridge damage is also reported according to Highways England, who state 75 minutes queues, though some have complained of being stuck for over two hours and counting:
@KentHighways @DartCharge @kentfirerescue @SECAmbulance @kent_police. Please be aware there are long delays on the #M25 in both directions approaching #DartfordCrossing. There is approx. 3 miles of congestion which is likely to add around 70 mins onto usual journey times.
— Highways England (@HighwaysSEAST) July 18, 2021
Highways England state:
The M25 is closed in both directions between J1A – J2 for bridge assessments to take place after a collision.
A bridge inspector is en-route.
Road users travelling clockwise are advised to follow the hollow triangle diversion route:
From M25 Junction 1A exit slip to roundabout “Littlebrook Interchange”, take 2nd exit onto A206 towards Greenhithe.
At A206 / A226 roundabout take 2nd exit onto B255 towards Bean.
Follow B255 past Bluewater to the A2 North Junction roundabout, take 2nd exit and cross the A2 to the South Junction roundabout and take 1st exit onto A2 towards London.
Follow A2 to M25 Junction 2 “Darenth Interchange” and then take 1st exit to re-join M25 towards Gatwick.
The Blackwall tunnel is already slow going in Greenwich as traffic diverts.
Northbound queues extend back as far as Sun in the Sand roundabout.
Diversions are in place.