A CRASH has closed all lanes on the A12 northbound. 

The A12 northbound is shut before J30 Upper Street, Stratford St Mary, with congestion to J29, Crown Interchange. 

This was first reported today (November 18) at 7.29am. 

The A12 southbound is also partially blocked following an obstruction in the road. 

Read More: A12 'obstruction' partially blocks road southbound with traffic slow near Colchester

The emergency services have been contacted for more information. 

Follow along for live updates here.