The Queen Elizabeth II Bridge at the Dartford Crossing was closed on Friday morning as police responded to an incident.
The busy commuter road was blocked for an hour from 5.30am with congestion backing up towards the J29 (Romford) of the M25, with queues on the A13 past Grays, according to traffic data site Inrix.
All lanes have now reopened but National Highways was reporting delays of 60 minutes.
Meanwhile delays were being reported on several Tube lines including the District, Jubilee and Northern. The Metropolitan line was part suspended between Chalfont & Latimer and Chesham due to a points failure.
Follow latest updates below.
Tube network hit by delays
06:59 , Jacob Phillips
There is currently no service between Chalfont & Latimer and Chesham on the Metropolitan Line due to a points failure at Chalfont & Latimer.
There are also severe delays on the District Line between Earl’s Court and Wimbledon due to engineering works finishing late.There are further delays on the Jubilee Line southbound due to a faulty train at Green Park.
The Northern Line is also suffering minor delays due to a shortage of trains.
Hour-long delays at Dartford Crossing
06:52 , Jacob Phillips
National Highways has warned that drivers are facing hour-long delays at the Dartford Crossing following the police incident.
Traffic stopped at Dartford Crossing due to ‘concerns for someone on the bridge’
06:49 , Jacob Phillips
Traffic is being held at the Dartford Crossing due to concerns for someone on the bridge, police have said.
An Essex Police spokesperson said: “We are currently on scene of an incident on the Dartford Crossing.
“We had been called to concerns for someone on the bridge shortly before 5.20am today (Friday 17 May) and have responded.
“This is an ongoing incident and traffic is currently being held.
“Please plan your route, we appreciate your understanding and will provide an update as soon as we are able to.”