By-pass

the Colnbrook By-Pass on the A4

The railway was in fact shifted in 1937 a little to the west, over a distance of a quarter-mile, to make room for the by-pass at this point, but complete abandonment was firmly vetoed because of the proved strategic value of the line.

In The Bus We Loved (2005) Travis Elborough describes the New Road [now named Euston Road and Marylebone Road] as 'London's first by-pass ... a kind of perimeter fence, a here be yokels boundary line between the burgeoning town and the country'.