The onslip from New Bridge Street to the Central Motorway East, which was closed along with one lane of the CME while emergency services dealt with a collision, has now opened.
The two vehicles involved in the accident are awaiting recovery and there is still congestion in the area while the incident is cleared.
Northumbria Police believe nobody was seriously injured in the collision.
A two vehicle accident on the A167 Northbound between New Bridge Street/Durant Road (A193/B1309) and Sandyford Road (B1307) has caused blockages on two lanes on the motorway, according to police.
Both lanes on the A1 southbound are now following broken down vehicle near Dunston Road.
One lane remains closed northbound, so motorists are advised to use an alternative route if possible.
There is currently heavy traffic on the A1 in Gateshead and Newcastle, police say.
A broken down vehicle is currently blocking one lane southbound, just before Dunston Road.
One lane remains closed northbound at Blaydon Bridge due to damage caused to the barrier in a collision this morning.
Officers are in the area to help keep traffic disruption to a minimum.
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East Coast trains said there could be delays of up to one hour on trains through Darlington, because of signalling problems.
Owing to signalling problems at Darlington, train services running through this station may be delayed by up to 60 mins at short notice.
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Northern Rail has suspended services between Middlesbrough and Saltburn after strong winds blew metal sheeting onto the line.
A spokesman said they were unsure where the sheeting had come from.
Engineers are to cut up and remove the debris before services can resume.
Replacement buses are being provided.
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