Can anyone confirm how high the track needs to be elevated on these 30" bridges, i.e., the track sits directly on the plastic bridge floor. I recall that these bridges were made for Realtrax with has its roadbed built in and therefore elevates the rails high enough. Without a minimum elevation, track without a roadbed will cause some steamers' siderods to hit the walkways. I don't have all the components to figure this, so I am hoping someone who has used these bridges with Gargraves or Ross track and knows how high the track needs to be elevated. Cork roadbed for example is only 3/16" thick, and may not be enough. Thanks.
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