Civil 3d, 3ds max and Vray road network materials?

[larsmosnes]

Hi there. Im am working on a aerial view viz for some roads in a residens area.

 

The road network have a few intersections and turning areas pluss some sidewalks etc.

 

now my question is how to put a good material for the roads. For grass and other large areas i use mix maps to create some good variations. But not sure if this works as well with a road network.

 

Any tips and tricks for this guys?

 

UW unwrapping is not my strong side, but maybe i need to learn this and create something matched i PS.

 

 

Cheers!