Inroads Modeling/Target Aliasing issue

Your dataset would be helpful here to investigate what is wrong. and not all is clear to me. However few things worth trying firs:

When creating surface in Roadway Designer are you clipping mainline with ramp corridor?
Is Crate Boundary checkbook checked in w creating combined ?
Sometimes generating transverse features helps.

Here is my setup.  I have all the ramps clipping the mainline.  And the add exterior boundary is turned on.  I will try the transverse features and see if that helps.

Thanks

The transverse features only made the surface worse. Maybe I can explain a little better.

In the first picture, the thin white line that crosses almost the entire picture is the fill slope from the mainline. We flattened the fill slope to waste material in the infield. The ramp has target aliasing on and it is to first find the mainline model, then existing ground. This was working fine before, as the mainline was steep enough that it found the mainline corridor on the infield side and existing ground on the outside of the ramp.

Now that we have flattened the mainline slope, the fill reaches existing ground outside of where the outside fill of the ramp hits. This was resulting in a varied slope fill, the ramp fill (3:1) and then the mainline fill (6:1) past where it hit the flattened model. I changed the template such that the outside ramp fill slope finds the existing ground surface instead of the active surface. This seems to work in the modeler. However, upon creating the surface, it connects from where the ramp fill slope hits existing ground out to where the mainline model hits existing ground, as shown in the second picture. The dark blue is the existing ground, the pink is the model, and the while line is the 6:1 slope from the mainline, which is off screen to the right of the ramp.

So is there an easy way to get the model to not connect these points and just have it use the outside fill of the ramp? Or am I stuck doing triangle cleanup?

The transverse features only made the surface worse. Maybe I can explain a little better.

In the first picture, the thin white line that crosses almost the entire picture is the fill slope from the mainline. We flattened the fill slope to waste material in the infield. The ramp has target aliasing on and it is to first find the mainline model, then existing ground. This was working fine before, as the mainline was steep enough that it found the mainline corridor on the infield side and existing ground on the outside of the ramp.

Now that we have flattened the mainline slope, the fill reaches existing ground outside of where the outside fill of the ramp hits. This was resulting in a varied slope fill, the ramp fill (3:1) and then the mainline fill (6:1) past where it hit the flattened model. I changed the template such that the outside ramp fill slope finds the existing ground surface instead of the active surface. This seems to work in the modeler. However, upon creating the surface, it connects from where the ramp fill slope hits existing ground out to where the mainline model hits existing ground, as shown in the second picture. The dark blue is the existing ground, the pink is the model, and the while line is the 6:1 slope from the mainline, which is off screen to the right of the ramp.

So is there an easy way to get the model to not connect these points and just have it use the outside fill of the ramp? Or am I stuck doing triangle cleanup?