https://forums.autodesk.com/t5/infraworks-forum/terrain-import-to-civil-3d/m-p/11155124#M2448 <P>It's always been there. The transportation one is garbage. Just kill it. We never use the transportation one.</P> Sun, 08 May 2022 14:10:51 GMT Todd_Rogers 2022-05-08T14:10:51Z https://forums.autodesk.com/t5/infraworks-forum/terrain-import-to-civil-3d/m-p/11153220#M2447 <P>I have a model with only one terrain surface created from a large 1 DEM GEOTIFF. When I export to IMX (or open the model from Civil 3D) I get two surfaces coming into Civil 3D.</P><P>&nbsp;</P><P>Why is that?</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="2.png" style="width: 608px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1064119i69F881F61E0964B7/image-size/large?v=v2&amp;px=999" role="button" title="2.png" alt="2.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="1.png" style="width: 539px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1064120i25178C21C66056E8/image-size/large?v=v2&amp;px=999" role="button" title="1.png" alt="1.png" /></span></P> Fri, 06 May 2022 19:50:54 GMT https://forums.autodesk.com/t5/infraworks-forum/terrain-import-to-civil-3d/m-p/11153220#M2447 fcernst 2022-05-06T19:50:54Z https://forums.autodesk.com/t5/infraworks-forum/terrain-import-to-civil-3d/m-p/11155124#M2448 <P>It's always been there. The transportation one is garbage. Just kill it. We never use the transportation one.</P> Sun, 08 May 2022 14:10:51 GMT https://forums.autodesk.com/t5/infraworks-forum/terrain-import-to-civil-3d/m-p/11155124#M2448 Todd_Rogers 2022-05-08T14:10:51Z https://forums.autodesk.com/t5/infraworks-forum/terrain-import-to-civil-3d/m-p/11159344#M2449 <P>Infraworks automatically creates surfaces for the roads that were made with model builder, even if you want them or not. I agree with Todd, it isn't very useful. I always delete it.</P> Tue, 10 May 2022 13:15:46 GMT https://forums.autodesk.com/t5/infraworks-forum/terrain-import-to-civil-3d/m-p/11159344#M2449 JasonArtley 2022-05-10T13:15:46Z