This might look a little familiar.  It's origins are of course, the old Hornby GWR station footbridge kit, which is now in the Gaugemaster ''Fordhampton'' range (along with other associated Hornby kits of that era - the GWR signal box & level crossing, and the ''Dunster'' station building for example).  Only here, the kit has had to be heavily modified to fit my station, Coleston, which has four tracks running between the platforms.  So I have used parts from two such kits, joined together, to obtain the necessary span.  Also, the bridge, as designed, sits far too high above the tracks (just look at the picture on the Gaugemaster web site for kit no. GM403, it looks ludicrous, as in reality, station footbridges would generally be only a few short feet above the tops of the trains).  So the 4-section staircase flight on each side of the bridge has been reduced to just 2 sections, to give a more authentic-looking appearance.