Tomy Plarail C62 variations?

[Super]

Both bridges actually share the same mold, but different colour.

Not exactly the same mold Vio. I am not sure about the cream colored bridge like these as I don't have one of those but there is a difference between the brown and white ones where the brown bridge can have a track connected on either end without the use of a riser/pier where the white one must have a riser/pier on each end. I could get you a picture if you would like to see the difference.