Traffic is backing up quickly after an accident led to an overturned car this morning.
BBC Traffic News report BOTH sides of the tunnel are closed.
⚠️ ⛔️ Blackwall Tunnel closed both north and southbound because of an overturned car southbound. Queues from Bow and the Woolwich Road Flyover [ro] pic.twitter.com/GoQnBP63Oy
— BBC London Travel (@BBCTravelAlert) July 17, 2018
Traffic is heavy as cars head to Woolwich Ferry and Rotherhithe tunnel.
UPDATE: The car has been removed and both tunnels reopened.