I've used atlas thru plate girder and pony truss bridges with eztrack. You are probably going to have to cut off the plastic connector on the eztrack piece adjacent to the bride, and build a small abutment to support the bridge out of a block of wood. But the rails will connect using standard rail joiners. In fact, you can connect any HO track to EZ track, as long as you cut off the plastic connector, and shim the approaching track to the same height as the EZ track.
kevin