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Why is Option B incorporated with Option 1 only £20m more when other options are £50m more?
Option 1B takes a shorter / more direct route than Option 1A, whereas there is less of a difference in the length of
new roads between the other A and B options. The shorter route taken by Option 1B means results in some cost
reduction which partly offsets some of the additional cost of new road building compared to Option 1A.