Cul-de-sac with Island Corridor

[Anonymous]

I am having a hard time trying to figure out how to model a cul-de-sac with an island. How do you fill in the missing piece in the attached image without creating a ton of other baseline alignments?

Any help would be wonderful! Thanks

[sboon · Accepted solution]

I don't know if two more alignments counts as a ton, but I would have a centerline that continues from where your current alignment splits at approx. 11+90 through the centers of the two island curves.  The second alignment would follow the outer perimeter of the island.  Use both of these as horizontal targets for your current corridor, to fill in the triangular gap.  Add another baseline and region for the island, using an assembly which builds only the curb and the raised island area.

Steve
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[wfberry]

I am not sure what you have done to get to this point.  There are several ways to go about it.  If you did nothing else but made a surface from what you are showing, I believe that it would fill it in.  Then go back a place a few feature lines to dress it up.

Bill

[Anonymous]

Thank you but I was trying to avoid using feature lines. I want something that will automatically update if we change the profiles so that I can add smart spot elevations and won't have to worry about keeping the feature lines updated.