Creat widened and superelevation prefabricated bridge with dynamo

question1: I want to creat a prefabricated bridge with width changing and superelevation changing by using dynamo like the following picture, however I have no ideas about the auto-fit of width and superelevation .

question2: Making of auto-fit of the bridge piles with the topography.

I am sorry about my pool english.

thanks.