Trumpington and Stump Cross (M11 junction 9A, the A11 spur) became A1301, whilst the section between there and Great Dunmow became an extension of the B184. The A11 was also reclassified to minor A-roads and B-roads at this time (qv.). In early 2008, the section between Great Dunmow and Little Waltham was declassified to become an extension of the B1008, itself a product of earlier re-routing.

During the mid-1980s, the A12 Chelmsford Bypass opened