No, the footbridge at Pewsey station hasn't been given a second flight of steps. It is due to be replaced and a new footbridge is being constructed behind it but with the steps now facing the entrance. This view shows the down (westbound) platform.
<a href="//commons.wikimedia.org/wiki/User:Geof_Sheppard" title="User:Geof Sheppard">Geof Sheppard</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>