corridor question

[Hidden_Brain]

i have a question for the gurus. how do i accomplish modeling two parallel roads with a median in between? in other words, say a northbound (NB) and a parallel southbound (SB) roadway, with a grass median in between them. the both roads have crown, and then eventually slope down towards the median, and at one point they meet. i am curious to know if say for NB and SB, i have an assembly with the lanes, then shoulder, and then median area past the shoulder at x%, what subassembly should i use to accurately model the point where the NB and SB x%s meet?

*Edit:

I am not sure if i would be able to do it with only one baseline, as the roads may not always be parallel. hope that makes sense.

[ZLQ0000]

i think the assembly called "divided highway" is what you need. one base line, you need to define the edge when NB and SB are not parallel.

another way is two base line,NB and SB,  use linkslopsbetweenpoints to connect inside shoulders.