How to visualize two way link network attributes in GIS?

I've exported a Cube network with some calculated link attributes (percent volume threshold) to a shapefile.  For two-way links, this results in two overlapping features in GIS.  I would like to somehow offset the links or their symbology to indicate the link attributes by direction of traffic flow.  Any tips or overview for how to accomplish this in ArcMap would be appreciated.  Does it involve also exporting the nodes to a shapefile?