Edit - forgot to mention these tidbits - once you make ONE of these, you can position them together as a road, a pathway, etc.

This was also a TINY extraction (you can see some pixellation) from a much larger image - in which case I could have done a rather large chunk of road all in one shot and would have less to duplicate and position later.

ALSO - once you make a good base from an image - you can TILE them so they're easier to dupe and position.

Hope this helps-
-Lew ;-)