The old A120 has been bypassed in several places, such that the old Roman road can be easily traced on a map, with the current designated A120 being less straight. From west to east, the A120's bypasses are:
Bishop's Stortford - the old A120 passes through the centre of town as the A1250, while the A120 now forms a semicircular bypass to the north of the town before rejoining its old course just before crossing the M11 motorway.
M11 to Braintree - the old A120 has been bypassed significantly in a recently finished building project which has created the new A120, a dual-carriageway road from the M11 at junction 8 all the way to the Braintree bypass. This bypass avoids the village of Takeley and the town of Great Dunmow.
The A120's M11 to Braintree bypass replaced a previous bypass of the A120 around Great Dunmow, which stopped traffic heading to the ports of the east coast from passing directly through the historic town centre.
Braintree - a dual-carriageway carries the A120 around the south of Braintree, rejoining its old route on the eastern edge of the town.
A few miles east of Braintree at the small town......