As part of the CRM 0n30 Modular Layout i am building a valley Modular which will have a wooden trestle bridge going across it

The standard for the modules is to have the track at four inches above table level, Forks Trestle will hang between two tables though and the rest of the modules will then be placed either side of it. This arrangement works OK, we have a single OO scale module which drops below table level too, but it is strictly one drop down section per assembly because varying table lengths at different venues make it impossible to guarantee that the layout can match two table joins.

heres the link to were i got to on the old Rmweb http://www.rmweb.co.uk/forum/viewtopic.php?f=90&t=44976