/products/road___site_design/b/road_and_site_design_blog/posts/how-do-i-create-an-alternate-surfaceThe creation of an alternate surface begins in the template. Within each template that makes up the corridor, edit the points for which the alternate surface will be comprised. If the bottom of the component consists of points: LEOP_B, CL_B and REOP_Pen-USTelligent Community 12