How do i build them using Sidewalks
Havent figured out that one yet,
Well, you have to work around 2 main limitations:
1. Paths, unlike ride tracks, do not have the autotunnel option.
2. Terrain immediately adjacent to existing pieces of path cannot be edited.
So, you have 2 basic options.....
A. Build the path first, then bury it by pulling terrain up and over it. Useful if the path is going to be at or above the base ground level, and if you're going to be making a hill there anyway.
B. Dig the tunnel through an existing hill or down into the base ground level, then put the path through it. The floor of the tunnel must be very smooth and the slope not too steep or you wan't be able to place path in it. Also, the diameter of the tunnel needs to be rather wider than the path and have a ceiling about 6m at least above the top of the path. So it's generally a good idea to make the hole rather bigger than you want it, put the path in it, then pull the walls and ceiling in as far as they'll go afterwards.