Remove duplicate lines issue

 - I'm exporting some GIS data out of my GIS and into an .AI export. It contains a roads data layer. When I do this the road centerlines as well as sides get exported and they are for the most part on top of each other. I need to be able to reduce the huge file size by eliminating the duplicates. In my lasing software there is a tool to remove overlapping lines and an offset that I can say within .1mm or whatever. Very useful. If I can do this in CorelDraw 2020 it would be much better as the file size will decrease dramatically. These are lines, not shapes. Illustrator does not do this and no plugins exist to remove them as far as I've found. Any ideas? Thanks in advance

Dean Forss

GIS Scientist - Cartographer