Excluding earthwork through specific template drops

Hi,

Is there a way to exclude the calculation of earthwork quantities through one specific template drop on a corridor? We have a roadway with a bridge and are trying to calc earthwork along the road using the Corridors --> Component Quantities tool, but the earthwork is calculating fill underneath the bridge, which we don't need. What is the best way to find the earthwork in this situation? Can we select each template and calc earthwork, or lock the bridge template drop? Or is this issue related to the template itself? We are just in the concept stage, so we aren't running cross sections at this time and cannot use End Area Volumes to find earthwork. 

Thanks, any advice is appreciated.