TRAFFIC is heavier than normal and building on the A12 Colchester-bound near Chelmsford.

Heavy congestion has been reported since 5.11pm today on A12 Northbound between Junction 16, B1007, Stock Road in Galleywood and Junction 18, A1060 in Danbury.

Travel time is estimated to extend by 15 minutes.

It has been reported that Essex Police are on the scene.