[falkster]

Ive just had a quick search on google for some ideas and there are plenty out there, you just need to use your imagination and use the height rather then just the board.

Found this traack which looks a pretty good use of space - you have to forward it to 32 seconds, lots of Minis!!!

http://www.youtube.com/watch?v=dfGR8z8mjKA...player_embedded

 

[falkster]

You could always use trial and error?? Bridges are as solid as you make them. I raised my track on graduated pieces of wood the had a consistent size piece of wood every 10 or so inches on the fully raised bit but also cut a piece of foamed PVC that keeps everything steady.