The report of the public enquiry into the proposed Westbury bypass was published in the last few days, together with the ministers' decisions. The report recommended that the proposal be rejected, and the ministers agreed.
The Westbury bypass would have cost many millions of pounds and was to be on the A350 - the road that parallels the TransWilts line.
Keys as to why the application was rejected:
* Conjestion is elsewhere
* Models are doubtful / limited use
* Doesn't fit long term plan
* Serious impact on environment (in parts only)
* Doesn't encourage modal shift
* Very expensive to improve conditions for few in town
* Possible that far west route may be better
Objections that were overruled:
* wildlife mitigation was adequate
* pollution fears were misplaced
and indeed it would have removed traffic from the town
I have written more / provided links to the full report / looked forward at
http://www.wellho.net/mouth/2268_Westbury-Bypass-Refused-looking-forward.html