How do u place catwalks on rollercoaster tycoon3 after u downloaded it

Question

How do u place catwalks on rollercoaster tycoon3 after u downloaded it

Answer 1

You just open the game, and load the coaster.  Then you should be able to get into all your scenery items, where you will find them.  [=

If you are talking about custom scenery, then you should know where to look.

If you are talking about default supports, they just come on certain pieces of track.