You may be interested in the following information concerning the A12 widening scheme and the work in progress on the Boreham Interchange.
A12 Chelmsford to A120 widening supplementary consultation update here
Take a “Fly Through” the proposed A12 junction 19 to 21 here
Information Notice from Terling and Fairstead Parish Council here
A12 to A120 Proposed Widening Consultation now open, here
Consultation Response Form here
Boreham Interchange here