Here is a few of my different versions: First is 1/8th " cork, painted with acrylic color pavement. weathered with pan pastels. white glue painted jet black for road tar patch..
This PVC (AKA) Foamy, no paint, white chalk weathering, and white out roller stripes..
This is 2 Home Depot large paint mixer sticks glued together. Covered with spackle and covered with jet black fine ballast solidified with white glue. I did want a grainy look'... Forum member, Toledo Ed, invented the ballast for black top..
Close up, distance shot
This is actual cork road bed for under the tracks. Painted with Woodland Scenics Topcoat' WHen I built these roads, I was unaware of all the other methods available. I also used Rust Oleum textured stone paint for certain areas. It looks like actual cement/concrete roads. As soon as I can find those pixs, I'll post it...