I like the NLS website for this kind of research, containing historical 6 inch Ordnance Survey maps of the whole country, projected on Bing Maps.
So I took a look (is that correct english?).
Is this the footbridge?
http://maps.nls.uk/geo/explore/#zoom=18&lat=51.6926&lon=-2.3560&layers=171
Playing with the transparancy, Bing Maps shows the current satelite photo, then looking for the same spot on Google Maps gives a June 2009 Streetview, with a nice footbridge on it:
https://www.google.nl/maps/place/Dursley,+Gloucestershire+GL11,+Verenigd+Koninkrijk/@51.6925086,-2.3560698,3a,75y,117.73h,77.76t/data=!3m7!1e1!3m5!1sGpb66cAtb_qzNIOs4aLY9Q!2e0!6s%2F%2Fgeo3.ggpht.com%2Fcbk%3Fpanoid%3DGpb66cAtb_qzNIOs4aLY9Q%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D100%26h%3D80%26yaw%3D133.43102%26pitch%3D0!7i13312!8i6656!4m2!3m1!1s0x48710a63f1f3824f:0x20fb40ce3d0ef022!6m1!1e1
But, of course, thats is 6 years ago...
Kind regards from the Netherlands, Jelle Jan