Hello there community,
First time poster here. I have an imported AutoCAD file on my sketchup model which contains the lines and dimensions and elements that make up a road. So far I have been developing roads by a tedious task of making contours, this is tedious as I have to erase the straight lines that connect the start and end of roads, what I want is a bitumen infill directly between the two lines if possible.

I have uploaded the drawing, hopefully somebody out there can help!

*NB you will note that some roads are made solid whereas others are contoured, this is just me playing around trying to get a feel for the most accurate model.