The title above refers to the section of road that is now the A316 Country Way, from M3 J1 to the Hope & Anchor junction with the A305. Before it was built in its present form, it existed as the A305 Twickenham Road, a slightly less direct single carriageway road with frontage access. Genesis as…

In the post-war period, Western Avenue was allocated a high priority for scarce road improvement funds, and was progressively upgraded from its original S2/S3 configuration to D3 between Shepherd’s Bush and Denham. The dualling work was not especially sophisticated, generally just the reconstruction of the roadway within its existing boundaries and retention of the diamond-shaped…

This route was first proposed as a motorway in [YEAR]. By the late 1960s, a line for a series of connected bypasses along the line of the A41 between Watford and Tring existed in the Hertfordshire County Development Plan, but the fact that it was now being worked up into a motorway was still under…