Hi cromptonnut,
I didn't realise I'd not said what it was - yes it's '00', nominal 4 mm scale. I did think about leaving sleeper indentations, but decided it would be a messy job as well as most lifted track seemingly leaving little trace. I don't know if there was a programme of removing, cleaning and reusing ballast ? I believe it is done with modern equipment on lines still in use, but that's re-using at the same location. Indentations on 7 mm will probably work well.
I would have thought matchsticks would still be useable for fencing on 7 mm scale, on 00 a nominal 2.25 mm matchstick represents a 6.3/4 " fence post so at 7 mm slightly under 4 ". Height and angle of embankment need matching, you'll notice I have much steeper (unrealistically so) at the buffer end, but in my minds eye the land rises here, rather than box the sides in I kept green with steep - pretend it's rocky ground embankment.
I don't recall giving my measurements, but I worked on a 250 mm wide base, 100 mm wide embankment top, resting on 50 mm side supports. To try (and it worked) to prevent the 6 mm MDF warping the box section had 9 mm sq beading stuck along all the inside joints. I look forward to your variation on the theme, it should look very good with the increased detail available on '0' models.
I again can't recall if I said that the embankment sides are from styrene ceiling tiles. I can still get these locally for just under a fiver for a pack of 20 and find them an ideal if messy base onto which I lay the final ground mix of 50% sawdust (I can get free) and 50% finishing plaster. The mess being the static charged cut off scraps that seem to get everywhere.
The cattle creep/culvert was one 'In my stock' from the Wills range, I'd purchased that for another job, but it was too small, here, although I'd not even intended using it when the MDF was cut it worked out to be the perfect size.
If you think I can be of any more help just ask, I've always thought that stimulating another modeller to have a crack at something is one of the highest accolades anyone can have. That inspiration can come from very humble models with each build improving on the originals - hence some of the super detail stuff we aspire to, but know I'll never match !!
Geoff T