https://communities.bentley.com/members/488a1c29_2d00_b6f2_2d00_4d48_2d00_8d27_2d00_d3352d4f021cChris Largy's recent activityen-USTelligent Community 12https://communities.bentley.com/products/road___site_design/f/geopak-inroads-mx-openroads-forum/140986/create-alternate-surface-from-milling-overlay-component-inroads-ss4Mon, 18 Sep 2017 13:45:24 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:f8485e5b-aba9-4410-a975-a4f5a08aa492mlemieux<p>Is there a way to create an alternate surface that follows the bottom of my milling component?&nbsp; Basically, I want a terrain model&nbsp;that follows ground 2&quot; below the project existing surface within the limit of the existing pavement.&nbsp; It doesn&#39;t seem that the alternate surface works for this component type.&nbsp; Also doesn&#39;t seem that I can use the bottom mesh in the design stage either.</p> <p>Surly I&#39;m overlooking something obvious..</p><div style="clear:both;"></div>