I’ve seen that behavior before. It seems like there’s a limit to the overall size and complexity of the SAT objects imported in Revit. (being too far away from the internal origin might be an issue too)
You can test this out by saving your road solid to a new sat file with the “ExportToSAT” node. If you import the resulting file in AutoCad, it imports ok but if you try to import it into Revit, you see the result shown above.
What I’ve done in such situations is split the solid into multiple pieces. Since you’re already using a loft, that should hopefully be relatively easy.